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Objections to evolution have been raised since evolutionary ideas came to prominence in the 19th century. When Charles Darwin published his 1859 book On the Origin of Species, his theory of evolution, the idea that species arose through descent with modification from a single common ancestor in a process driven by natural selection, initially met opposition from scientists with different theories, but came to be overwhelmingly accepted by the scientific community. The observation of evolutionary processes occurring, as well as the current theory explaining that evidence, have been uncontroversial among mainstream biologists for nearly a century.
Since then, nearly all criticisms of evolution have come from religious sources, rather than from the scientific community. In his book on Creationism, The Creationists, historian Ronald Numbers traces the religious motivations and scientific pretensions, of prominent creationists including George Frederick Wright, George McCready Price, Harry Rimmer, John C. Whitcomb, Henry M. Morris, and Phillip E. Johnson. Although many religions have accepted the occurrence of evolution, such as those advocating theistic evolution, there are some religious beliefs which reject evolutionary explanations in favor of creationism, the belief that a deity supernaturally created the world largely in its current form. The resultant U.S.-centered creation–evolution controversy has been a focal point of recent conflict between religion and science.
Modern creationism is characterized by movements such as Creation Science, neocreationism, and Intelligent Design which argue that the idea of life being directly "designed" by a god or intelligence is at least as scientific as evolutionary theory, and should therefore be taught in public schools. Their arguments against evolution have become widespread, and include objections to evolution's evidence, methodology, plausibility, morality, and scientific acceptance. The scientific community, however, does not accept such objections as having any validity, citing detractors' misinterpretations of scientific method, evidence, and basic physical laws.
Defining evolution 
One of the main sources of confusion and ambiguity in the creation-evolution debate is the definition of evolution itself. In the context of biology, evolution is genetic changes in populations of organisms over successive generations. However, the word has a number of different meanings in different fields, from evolutionary computation to molecular evolution to sociocultural evolution to stellar and galactic evolution. It can even refer to metaphysical evolution, spiritual evolution, or any of a number of evolutionist philosophies. When biological evolution is conflated with other evolutionary processes, this can cause errors such as the claim that modern evolutionary theory says anything about abiogenesis or the Big Bang.
In colloquial contexts, evolution can refer to any sort of progressive development, and often bears a connotation of gradual improvement: here evolution is understood as a process that results in greater quality or complexity. This common definition, when misapplied to biological evolution, leads to frequent misunderstandings. For example, the idea of devolution ("backwards" evolution) is a result of erroneously assuming that evolution is directional or has a specific goal in mind (cf. orthogenesis). In reality, the evolution of an organism has no "objective" other than increasing the organism's ability to survive and reproduce in its environment; and its suitability is only defined in relation to this environment. Biologists do not consider any one species, such as humans, to be more highly evolved or advanced than another. Certain sources have been criticized for indicating otherwise due to a tendency to evaluate nonhuman organisms according to anthropocentric standards rather than more objective ones.
Evolution also does not require that organisms become more complex. Although the history of life shows an apparent trend towards the evolution of complexity; there is a question if this appearance of increased complexity is real, or if this conclusion comes from neglecting the fact that the majority of life on earth has always consisted of prokaryotes. In this view, complexity is not a necessary consequence of evolution; rather, it is a consequence of the specific circumstances of evolution on Earth, which frequently made greater complexity advantageous, and thus naturally selected for. Depending on the situation, organisms' complexity can either increase, decrease, or stay the same, and all three of these trends have been observed in evolution.
Creationist sources frequently define evolution according to a colloquial, rather than scientific, meaning. As a result, many attempts to rebut evolution do not address the findings of evolutionary biology (see straw man argument). This also means that advocates of creationism and evolutionary biologists often simply speak past each other.
Scientific acceptance 
Status as a theory 
Critics of evolution frequently assert that evolution is "just a theory," with the intent of emphasizing that scientific theories are never absolute, or of characterizing it as a matter of opinion rather than of fact or evidence. This reflects a misunderstanding of the meaning of theory in a scientific context: whereas in colloquial speech a theory is a conjecture or guess, in science a theory is an explanation whose predictions have been verified by experiments or other evidence. Evolutionary theory refers to an explanation for the diversity of species and their ancestry which has met extremely high standards of scientific evidence. An example of evolution as theory is the modern synthesis of Darwinian natural selection and Mendelian inheritance. As with any scientific theory, the modern synthesis is constantly debated, tested, and refined by scientists, but there is an overwhelming consensus in the scientific community that it remains the only robust model that accounts for the known facts concerning evolution.
Critics also state that evolution is not a fact. In science, a fact is a verified empirical observation; in colloquial contexts, however, a fact can simply refer to anything for which there is overwhelming evidence. For example, in common usage theories such as "the Earth revolves around the Sun" and "objects fall due to gravity" may be referred to as "facts", even though they are purely theoretical. From a scientific standpoint, therefore, evolution may be called a "fact" for the same reason that gravity can: under the scientific definition, evolution is an observable process that occurs whenever a population of organisms genetically changes over time. Under the colloquial definition, the theory of evolution can also be called a fact, referring to this theory's well-established nature. Thus, evolution is widely considered both a theory and a fact by scientists.
Similar confusion is involved in objections that evolution is "unproven," since no theory in science is known to be absolutely true, only verified by empirical evidence. This distinction is an important one in philosophy of science, as it relates to the lack of absolute certainty in all empirical claims, not just evolution. Strict proof is possible only in formal sciences such as logic and mathematics, not natural sciences (where terms such as "validated" or "corroborated" are more appropriate). Thus, to say that evolution is not proven is trivially true, but no more an indictment of evolution than calling it a "theory". The confusion arises, however, in that the colloquial meaning of proof is simply "compelling evidence", in which case scientists would indeed consider evolution "proven."
Degree of acceptance 
In 1999, a new major objection to evolution appeared in Kansas: it argues that evolution is controversial or contentious. Unlike past creationist arguments which sought to abolish the teaching of evolution altogether, this argument makes the weaker claim that evolution, being controversial, should be presented alongside other, alternative views, and students should be allowed to evaluate and choose between the options on their own. This appeal to fairness and a balanced approach in which conflicting views are given equal time appeals to American creationists, and was endorsed by U.S. President George W. Bush.
This objection forms the basis of the "Teach the Controversy" campaign, an attempt by the Discovery Institute to promote the teaching of intelligent design in U.S. public schools. This in turn forms a major part of the Institute's "wedge strategy", an attempt to gradually undermine evolution and ultimately to "reverse the stifling materialist world view and replace it with a science consonant with Christian and theistic convictions".
Scientists and U.S. courts have rejected this objection on the grounds that science is not based on appeals to popularity, but on evidence. The scientific consensus of biologists, not popular opinion or fairness, determines what is considered acceptable science, and it is argued that although evolution is clearly controversial in the public arena, it is entirely uncontroversial among experts in the field.
In response, creationists have disputed the level of scientific support for evolution. The Discovery Institute has gathered over 600 scientists since 2001 to sign "A Scientific Dissent From Darwinism" in order to show that there are a number of scientists who dispute what they refer to as "Darwinian evolution". This statement did not profess outright disbelief in evolution, but expressed skepticism as to the ability of "random mutation and natural selection to account for the complexity of life." Several counter-petitions have been launched in turn, including A Scientific Support for Darwinism, which gathered over 7,000 signatures in four days, and Project Steve, a tongue-in-cheek petition that has gathered 1,238 (as of January 16, 2013) evolution-supporting scientists named "Steve"(or any similar variation thereof- Stephen, Stephanie, Esteban, etc.).
Creationists have argued for over a century that evolution is "a theory in crisis" that will soon be overturned, based on objections that it lacks reliable evidence or violates natural laws. These objections have been rejected by most scientists, as have claims that intelligent design, or any other creationist explanation, meets the basic scientific standards that would be required to make them scientific alternatives to evolution. It is also argued that even if evidence against evolution exists, it is a false dilemma to characterize this as evidence for intelligent design.
A similar objection to evolution is that certain scientific authorities – mainly pre-modern ones – have doubted or rejected evolution. Most commonly, it is argued that Darwin "recanted" on his deathbed, a false anecdote originating from the Lady Hope Story. These objections are generally rejected as appeals to authority.
Scientific status 
A common neo-creationist objection to evolution is that evolution does not adhere to normal scientific standards—that it is not genuinely scientific. It is argued that evolutionary biology does not follow the scientific method, and therefore should not be taught in science classes, or at least should be taught alongside other views (i.e., creationism). These objections often deal with the very nature of evolutionary theory and the scientific method.
Religious nature 
Creationists commonly argue against evolution on the grounds that "evolution is a religion; it is not a science". The purpose of this criticism is to undermine the higher ground biologists claim in debating creationists, and to reframe the debate from being between science (evolution) and religion (creationism) to being between two equally religious beliefs – or even to argue that evolution is religious while intelligent design is not. Those that oppose evolution frequently refer to supporters of evolution as "evolutionists" or "Darwinists".
The arguments for evolution being a religion generally amount to arguments by analogy: it is argued that evolution and religion have one or more things in common, and that therefore evolution is a religion. Examples of claims made in such arguments are statements that evolution is based on faith, that supporters of evolution revere Darwin as a prophet, and that supporters of evolution dogmatically reject alternative suggestions out-of-hand. These claims have become more popular in recent years as the neocreationist movement has sought to distance itself from religion, thus giving it more reason to make use of a seemingly anti-religious analogy.
In response, supporters of evolution have argued that no scientist's claims, including Darwin's, are treated as sacrosanct, as shown by the aspects of Darwin's theory that have been rejected or revised by scientists over the years, to form first Neo-Darwinism and later the modern evolutionary synthesis. The claim that evolution relies on faith, often based on the creationist belief that evolution has never been observed, is likewise rejected on the grounds that evolution has strong supporting evidence, and therefore does not require faith.
In general, the argument that evolution is religious has been rejected on the grounds that religion is not defined by how dogmatic or zealous its adherents are, but by its spiritual or supernatural beliefs. Evolutionary supporters point out evolution is neither dogmatic nor based on faith, and they accuse creationists of equivocating between the strict definition of religion and its colloquial usage to refer to anything that is enthusiastically or dogmatically engaged in. U.S. courts have also rejected this objection:
Assuming for the purposes of argument, however, that evolution is a religion or religious tenet, the remedy is to stop the teaching of evolution, not establish another religion in opposition to it. Yet it is clearly established in the case law, and perhaps also in common sense, that evolution is not a religion and that teaching evolution does not violate the Establishment Clause.
A related claim is that evolution is atheistic; creationists sometimes merge the two claims and describe evolution as an "atheistic religion" (cf. humanism). This argument against evolution is also frequently generalized into a criticism of all science; it is argued that "science is an atheistic religion", on the grounds that its methodological naturalism is as unproven, and thus as "faith-based", as the supernatural and theistic beliefs of creationism.
A statement is considered falsifiable if there is an observation or a test that could be made that would demonstrate that the statement is false. Statements that are not falsifiable cannot be examined by scientific investigation since they permit no tests that evaluate their accuracy. Creationists such as Henry M. Morris have claimed that evolution is unfalsifiable. They claim that any observation can be fitted into the evolutionary framework, and that therefore it is impossible to demonstrate that evolution is wrong. As such, they claim that evolution is non-scientific.
However, evolution is considered falsifiable by scientists because it can make predictions that, were they contradicted by the evidence, would falsify evolution. Several kinds of evidence have been proposed that could falsify evolution, such as the fossil record showing no change over time, confirmation that mutations are prevented from accumulating, or observations showing organisms being created supernaturally or spontaneously. Many of Darwin's ideas and assertions of fact have been falsified as evolutionary science has developed and has continued to confirm his central concepts. Despite this, creationism consists largely of unsubstantiated claims that evolution has been falsified. In contrast, creationist explanations involving the direct intervention of the supernatural in the physical world are not falsifiable, because any result of an experiment or investigation could be the unpredictable action of an omnipotent deity.
In 1976, philosopher Karl Popper said that "Darwinism is not a testable scientific theory but a metaphysical research programme". However, Popper later recanted and offered a more nuanced view of its status:
However, Darwin's own most important contribution to the theory of evolution, his theory of natural selection, is difficult to test. There are some tests, even some experimental tests; and in some cases, such as the famous phenomenon known as 'industrial melanism', we can observe natural selection happening under our very eyes, as it were. Nevertheless, really severe tests of the theory of natural selection are hard to come by, much more so than tests of otherwise comparable theories in physics or chemistry.
The most direct evidence that evolutionary theory is falsifiable may be the original words of Charles Darwin who, in chapter 6 of On the Origin of Species wrote: "If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down." If empirical evidence supported this instance, it would be affirmation of the creationist argument in favor of irreducible complexity.
In response to the unfalsifiability criticism of evolutionary theory, numerous examples of potential ways to falsify evolution have been proposed. J.B.S. Haldane, when asked what hypothetical evidence could disprove evolution, replied "fossil rabbits in the Precambrian era". Numerous other potential ways to falsify evolution have also been proposed. For example, the fact that humans have one fewer pair of chromosomes than the great apes offered a testable hypothesis involving the fusion or splitting of chromosomes from a common ancestor. The fusion hypothesis was confirmed in 2005 by discovery that human chromosome 2 is homologous with a fusion of two chromosomes that remain separate in other primates. Extra, inactive telomeres and centromeres remain on human chromosome 2 as a result of the fusion. The assertion of common descent could also have been disproven with the invention of DNA analysis. If true, human DNA should be far more similar to chimpanzees and other great apes, than to other mammals. If not, then common descent is falsified. DNA analysis has shown that humans and chimpanzees share a large percentage of their DNA (between 95% to 99.4% depending on the measure). Also, the evolution of chimpanzees and humans from a common ancestor predicts a (geologically) recent common ancestor. Numerous transitional fossils have since been found. Hence, human evolution has passed several falsifiable tests.
A related claim is that natural selection is tautological. Specifically, it is often argued that the phrase "survival of the fittest" is a tautology, in that fitness is defined as ability to survive and reproduce. However, this phrase, first used by Herbert Spencer in 1864, is rarely used by biologists. Additionally, fitness is more accurately defined as the state of possessing traits that make survival more likely; this definition, unlike simple "survivability", avoids being trivially true.
Similarly, it is argued that evolutionary theory is circular reasoning, in that evidence is interpreted as supporting evolution, but evolution is required to interpret the evidence. An example of this is the claim that geological strata are dated through the fossils they hold, but that fossils are in turn dated by the strata they are in. However, in most cases strata are not dated by their fossils, but by their position relative to other strata and by radiometric dating, and most strata were dated before the theory of evolution was formulated.
In his book, Abusing Science: The Case Against Creationism, philosopher of science Philip Kitcher specifically addresses the "falsifiability" question by taking into account notable philosophical critiques of Popper by Carl Gustav Hempel and Willard Van Orman Quine that reject his definition of theory as a set of falsifiable statements. As Kitcher points out, if one took a strictly Popperian view of "theory," observations of Uranus when first discovered in 1781 would have "falsified" Newton's celestial mechanics. Rather, people suggested that another planet influenced Uranus' orbit – and this prediction was indeed eventually confirmed. Kitcher agrees with Popper that "there is surely something right in the idea that a science can succeed only if it can fail." But he insists that we view scientific theories as consisting of an "elaborate collection of statements," some of which are not falsifiable, and others – what he calls "auxiliary hypotheses," which are.
According to Kitcher, good scientific theories must have three features – unity, fecundity, and independent testability of auxiliary hypotheses:
- "A science should be unified .... Good theories consist of just one problem-solving strategy, or a small family of problem-solving strategies, that can be applied to a wide range of problems" (1982: 47).
A great scientific theory, like Newton's, opens up new areas of research... Because a theory presents a new way of looking at the world, it can lead us to ask new questions, and so to embark on new and fruitful lines of inquiry... Typically, a flourishing science is incomplete. At any time, it raises more questions than it can currently answer. But incompleteness is no vice. On the contrary, incompleteness is the mother of fecundity... A good theory should be productive; it should raise new questions and presume that those questions can be answered without giving up its problem-solving strategies (1982: 47–48).
- Auxiliary hypotheses that are independently testable
- "An auxiliary hypothesis ought to be testable independently of the particular problem it is introduced to solve, independently of the theory it is designed to save" (1982: 46) (e.g. the evidence for the existence of Neptune is independent of the anomalies in Uranus's orbit).
Like other definitions of theories, including Popper's, Kitcher makes it clear that a good theory includes statements that have (in his terms) "observational consequences." But, like the observation of irregularities in Uranus's orbit, falsification is only one possible consequence of an observation. The production of new hypotheses is another possible – and equally important – observational consequence. Kitcher's account of a good theory is based not only on his understanding of how physical sciences work. He is also taking into account the way the life sciences work.
From Kitcher's point of view, Darwinian theory not only meets the three conditions for a good scientific theory; it is without question an extraordinarily successful theory:
The heart of Darwinian evolutionary theory is a family of problem-solving strategies, related by their common employment of a particular style of historical narrative. A Darwinian history is a piece of reasoning of the following general form. The first step consists in a description of an ancestral population of organisms. The reasoning proceeds by tracing the modification of the population through subsequent generations, showing how characteristics were selected, inherited, and became prevalent. Reasoning like this can be used to answer a host of biological questions.
The same kind of story can be told again and again to answer all sorts of questions about all sorts of living things. Evolutionary theory is unified because so many diverse questions ... can be addressed by advancing Darwinian histories. Moreover, these narratives constantly make claims that are subject to independent check.
Darwin not only provided a scheme for unifying the diversity of life. He also gave a structure to our ignorance. After Darwin, it was important to resolve general issues about the presuppositions of Darwinian histories. The way in which biology should proceed had been made admirably plain, and it was clear that biologists had to tackle questions for which they had, as yet, no answers.
Objections to the evidence that evolution occurs tend to be more concrete and specific, often involving direct analysis of evolutionary biology's methods and claims.
Lack of observation 
A common claim of creationists is that evolution has never been observed. Challenges to such objections often come down to debates over how evolution is defined (see above). Under the conventional biological definition of evolution, it is a simple matter to observe evolution occurring. Evolutionary processes, in the form of populations changing their genetic composition from generation to generation, have been observed in different scientific contexts, including the evolution of fruit flies, mice, and bacteria in the laboratory, and of tilapia in the field. Such studies on experimental evolution, particularly those using microorganisms, are now providing important insights into how evolution occurs.
In response to such examples, creationists specify that they are objecting only to macroevolution, not microevolution: most creationist organizations do not dispute the occurrence of short-term, relatively minor evolutionary changes, such as that observed even in dog breeding. Rather, they dispute the occurrence of major evolutionary changes over long periods of time, which by definition cannot be directly observed, only inferred from microevolutionary processes and the traces of macroevolutionary ones.
However, as biologists define macroevolution, both microevolution and macroevolution have been observed. Speciations, for example, have been directly observed many times, despite popular misconceptions to the contrary. Additionally, the modern evolutionary synthesis draws no distinction between macroevolution and microevolution, considering the former to simply be the latter on a larger scale. An example of this is ring species.
Additionally, past macroevolution can be inferred from historical traces. Transitional fossils, for example, provide plausible links between several different groups of organisms, such as Archaeopteryx linking birds and dinosaurs, or the recently-discovered Tiktaalik linking fish and limbed amphibians. Creationists dispute such examples, from asserting that such fossils are hoaxes or that they belong exclusively to one group or the other, to asserting that there should be far more evidence of obvious transitional species. Darwin himself found the paucity of transitional species to be one of the greatest weaknesses of his theory:
Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and gravest objection which can be urged against my theory. The explanation lies, as I believe, in the extreme imperfection of the geological record.
Darwin appealed to the limited collections then available, the extreme lengths of time involved, and different rates of change with some living species differing very little from fossils of the Silurian period. In later editions he added "that the periods during which species have been undergoing modification, though very long as measured by years, have probably been short in comparison with the periods during which these same species remained without undergoing any change." The number of clear transitional fossils has increased enormously since Darwin's day, and this problem has been largely resolved with the advent of the theory of punctuated equilibrium, which predicts a primarily stable fossil record broken up by occasional major speciations.
As more and more compelling direct evidence for inter-species and species-to-species evolution has been gathered, creationists have redefined their understanding of what amounts to a "created kind", and have continued to insist that more dramatic demonstrations of evolution be experimentally produced. One version of this objection is "Were you there?", popularized by Ken Ham. It argues that because no one except God could directly observe events in the distant past, scientific claims are just speculation or "story-telling". DNA sequences of the genomes of organisms allow an independent test of their predicted relationships, since species which diverged more recently will be more closely related genetically than species which are more distantly related; such phylogenetic trees show a hierarchical organization within the tree of life, as predicted by common descent.
In fields such as astrophysics or meteorology, where direct observation or laboratory experiments are difficult or impossible, the scientific method instead relies on observation and logical inference. In such fields, the test of falsifiability is satisfied when a theory is used to predict the results of new observations. When such observations contradict a theory's predictions, it may be revised or discarded if an alternative better explains the observed facts. For example, Newton's theory of gravitation was replaced by Einstein's theory of General Relativity when the latter was observed to more precisely predict the orbit of Mercury.
Instability of evidence 
A related objection is that evolution is based on unreliable evidence. This objection goes further than the less substantial "evolution isn't proven" arguments, claiming that evolution isn't even well-evidenced. Typically, this is either based on the argument that evolution's evidence is full of frauds and hoaxes, that current evidence for evolution is likely to be overturned as some past evidence has been, or that certain types of evidence are inconsistent and dubious.
Arguments against evolution's reliability are thus often based on analyzing the history of evolutionary thought or the history of science in general. Creationists point out that in the past, major scientific revolutions have overturned theories that were at the time considered near-certain. They thus claim that current evolutionary theory is likely to undergo such a revolution in the future, on the basis that it is a "theory in crisis" for one reason or another.
Critics of evolution commonly appeal to past scientific hoaxes such as the Piltdown Man forgery. It is argued that because scientists have been mistaken and deceived in the past about evidence for various aspects of evolution the current evidence for evolution is likely to also be based on fraud and error. Much of the evidence for evolution has been accused of being fraudulent at various times, including Archaeopteryx, peppered moth melanism, and Darwin's finches; these claims have been subsequently refuted.
It has also been claimed that certain former pieces of evidence for evolution which are now considered out-of-date and erroneous, such as Ernst Haeckel's 19th-century comparative drawings of embryos, used to illustrate his Recapitulation theory ("Ontogeny recapitulates Phylogeny"), were not merely errors but frauds. Jonathan Wells criticizes biology textbooks by alleging that they continue to reproduce such evidence after it has been debunked. In response, the National Center for Science Education notes that none of the textbooks reviewed by Wells makes the claimed error, as Haeckel's drawings are shown in a historical context with discussion about why they are wrong, and the accurate modern drawings and photos used in the textbooks are misrepresented by Wells.
Unreliable or inconsistent evidence 
Creationists claim that evolution relies on certain types of evidence that do not give reliable information about the past. It is argued, for example, that radiometric dating, the technique of evaluating a material's age based on the radioactive decay rates of certain isotopes, generates inconsistent, and thus unreliable, results. Radiocarbon dating, based on the Carbon 14 isotope, has been particularly criticized. It is argued that radiometric decay relies on a number of unwarranted assumptions, such as the principle of uniformitarianism, consistent decay rates, or rocks acting as closed systems. Such arguments have been dismissed by scientists on the grounds that independent methods have confirmed the reliability of radiometric dating as a whole; additionally, different radiometric dating methods and techniques have independently confirmed each other's results.
Another form of this objection is that fossil evidence is not reliable. This is based on a much wider range of claims. These include that there are too many "gaps" in the fossil record, that fossil-dating is circular (see evolution is unfalsifiable), or that certain fossils, such as polystrate fossils, are seemingly "out of place". Examination by geologists have found polystrate fossils to be consistent with in situ formation. It is argued that certain features of evolution support creationism's catastrophism (cf. Great Flood), rather than evolution's gradualistic punctuated equilibrium, which some assert is an "ad-hoc" theory to explain the fossil gaps.
Some of the oldest and most common objections to evolution dispute whether evolution can truly account for all the apparent complexity and order in the natural world. It is argued that evolution is too unlikely or otherwise lacking to account for various aspects of life, and therefore that an intelligence, such as God of the Abrahamic religions, must at the very least be appealed to for those specific features.
A common objection to evolution is that it is simply too unlikely for life, in its complexity and apparent "design", to have arisen "by chance". It is argued that the odds of life having arisen without a deliberate intelligence guiding it are so astronomically low that it is unreasonable not to infer an intelligent designer from the natural world, and specifically from the diversity of life. A more extreme version of this argument is that evolution cannot create complex structures. The idea that it is simply too implausible for life to have evolved is often wrongly encapsulated with a quotation that the "probability of life originating on earth is no greater than the chance that a hurricane sweeping through a scrap-yard would have the luck to assemble a Boeing 747" - a claim attributed to astrophysicist Sir Fred Hoyle and known as Hoyle's fallacy. Hoyle was a Darwinist, atheist and anti-theist, but advocated the theory of panspermia, in which abiogenesis begins in outer space and primitive life on Earth is held to have arrived via natural dispersion.
Views superficially similar, but unrelated to Hoyle's, are thus invariably justified with arguments from analogy. The basic idea of this argument for a designer is the teleological argument, an argument for the existence of God based on the perceived order or purposefulness of the universe. A common way of using this as an objection to evolution is by appealing to the 18th-century philosopher William Paley's watchmaker analogy, which argues that certain natural phenomena are analogical to a watch (in that they are ordered, or complex, or purposeful), which means that, like a watch, they must have been designed by a "watchmaker"—an intelligent agent. This argument forms the core of intelligent design, a neocreationist movement seeking to establish certain variants of the design argument as legitimate science, rather than as philosophy or theology, and have them be taught alongside evolution.
This objection is fundamentally an argument by lack of imagination, or argument from incredulity: a certain explanation is seen as being counter-intuitive, and therefore an alternate, more intuitive explanation is appealed to instead. Supporters of evolution generally respond by arguing that evolution is not based on "chance", but on predictable chemical interactions: natural processes, rather than supernatural beings, are the "designer". Although the process involves some random elements, it is the non-random selection of survival-enhancing genes that drives evolution along an ordered trajectory. The fact that the results are ordered and seem "designed" is no more evidence for a supernatural intelligence than the appearance of complex natural phenomena (e.g. snowflakes). It is also argued that there is insufficient evidence to make statements about the plausibility or implausibility of abiogenesis, that certain structures demonstrate poor design, and that the implausibility of life evolving exactly as it did is no more evidence for an intelligence than the implausibility of a deck of cards being shuffled and dealt in a certain random order.
It has also been noted that arguments against some form of life arising "by chance" are really objections to nontheistic abiogenesis, not to evolution. Indeed, arguments against "evolution" are based on the misconception that abiogenesis is a component of, or necessary precursor to, evolution. Similar objections sometimes conflate the Big Bang with evolution.
Christian apologist and philosopher Alvin Plantinga, a supporter of intelligent design, has formalized and revised the improbability argument as the evolutionary argument against naturalism, which asserts that it is irrational to reject a supernatural, intelligent creator because the apparent probability of certain faculties evolving is so low. Specifically, Plantinga claims that evolution cannot account for the rise of reliable reasoning faculties. Plantinga argues that whereas a God would be expected to create beings with reliable reasoning faculties, evolution would be just as likely to lead to unreliable ones, meaning that if evolution is true, it is irrational to trust whatever reasoning one relies on to conclude that it is true. This novel epistemological argument has been criticized similarly to other probabilistic design arguments. It has also been argued that rationality, if conducive to survival, is more likely to be selected for than irrationality, making the natural development of reliable cognitive faculties more likely than unreliable ones.
Unexplained aspects of the natural world 
It is frequently argued that a great weakness of evolutionary theory is that it does not, or cannot, explain a certain aspect of the natural world. Although there is broad agreement that certain aspects of life remain unexplained, creationists argue that evolution should be abandoned altogether because of the phenomena it does not explain. It is argued that an alternative explanation, such as intelligent design, can explain the things which evolution cannot. For example, Michael Behe has argued that current evolutionary theory cannot account for certain complex structures, particularly in microbiology. On this basis, Behe argues that such structures were "purposely arranged by an intelligent agent" (see argument from incredulity).
In addition to complex structures and systems, among the phenomena that critics variously claim evolution cannot explain are consciousness, hominid intelligence, instincts, emotions, metamorphosis, photosynthesis, homosexuality, music, language, religion, morality, and altruism (see altruism in animals). Most of these, such as homosexuality, hominid intelligence, instinct, emotion, photosynthesis, language, and altruism, have been well-explained by evolution, while others remain mysterious, or only have preliminary explanations. However, supporters of evolution contend that no alternative explanation has been able to adequately explain the biological origin of these phenomena either.
Creationists argue against evolution on the grounds that it cannot explain certain non-evolutionary processes, such as abiogenesis, the Big Bang, or the meaning of life. In such instances, evolution is being redefined to refer to the entire history of the universe, and it is argued that if one aspect of the universe is seemingly inexplicable, the entire body of scientific theories must be baseless. At this point, objections leave the arena of evolutionary biology and become general scientific or philosophical disputes.
This class of objections is more radical than the above, claiming that a major aspect of evolution is not merely unscientific or implausible, but rather impossible, because it contradicts some other law of nature or is constrained in such a way that it cannot produce the biological diversity of the world.
Creation of complex structures 
"Living things have fantastically intricate features-at the anatomical, cellular, and molecular levels-that could not function if they were any less complicated or sophisticated. The only prudent conclusion is that they are products of Intelligent Design, not Evolution" —from Refuting Evolution 2, Jonathan Sarfati
Modern evolutionary theory posits that all biological systems must have evolved incrementally, through a combination of natural selection and genetic drift. Both Darwin and his early detractors recognized the potential problems that could arise for his theory of natural selection if the lineage of organs and other biological features could not be accounted for by merely gradual, step-by-step changes over successive generations; if all the intermediary stages between an initial organ and the organ it will become are not all improvements upon the original, it will be impossible for the later organ to develop by the process of natural selection alone. Anticipating early criticisms that the evolution of the eye and other complex organs seemed impossible, Darwin noted that:
[R]eason tells me, that if numerous gradations from a perfect and complex eye to one very imperfect and simple, each grade being useful to its possessor, can be shown to exist; if further, the eye does vary ever so slightly, and the variations be inherited, which is certainly the case; and if any variation or modification in the organ be ever useful to an animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, can hardly be considered real.
There's got to be a series of advantages all the way in the feather. If you can't think of one, then that's your problem not natural selection's problem... It's perfectly possible feathers began as fluffy extensions of reptilian scales to act as insulators... The earliest feathers might have been a different approach to hairiness among reptiles keeping warm.
Creationist arguments have been made such as "What use is half an eye?" and "What use is half a wing?". Research has confirmed that the natural evolution of the eye and other intricate organs is entirely feasible. Creationist claims have persisted that such complexity evolving without a designer is inconceivable, however, and this objection to evolution has been refined in recent years as the more sophisticated irreducible complexity argument of the intelligent design movement, formulated by biochemist Michael Behe.
Irreducible complexity is the idea that certain biological systems cannot be broken down into their constituent parts and remain functional, and therefore that they could not have evolved naturally from less complex or complete systems. Whereas past arguments of this nature generally relied on macroscopic organs, Behe's primary examples of irreducible complexity have been cellular and biochemical in nature. He has argued that the components of systems such as the blood clotting cascade, the immune system, and the bacterial flagellum are so complex and interdependent that they could not have evolved from simpler systems.
"In fact, my argument for intelligent design is open to direct experimental rebuttal. Here is a thought experiment that makes the point clear. In Darwin's Black Box (Behe 1996) I claimed that the bacterial flagellum was irreducibly complex and so required deliberate intelligent design. The flip side of this claim is that the flagellum can't be produced by natural selection acting on random mutation, or any other unintelligent process. To falsify such a claim, a scientist could go into the laboratory, place a bacterial species lacking a flagellum under some selective pressure (for mobility, say), grow it for ten thousand generations, and see if a flagellum—or any equally complex system—was produced. If that happened, my claims would be neatly disproven." —Michael Behe
In the years since Behe proposed irreducible complexity, new developments and advances in biology, such as an improved understanding of the evolution of flagella, have already undermined these arguments. The idea that seemingly irreducibly complex systems cannot evolve has been refuted through evolutionary mechanisms, such as exaptation (the adaptation of organs for entirely new functions) and the use of "scaffolding", which are initially necessary features of a system that later degenerate when they are no longer required. Potential evolutionary pathways have been provided for all of the systems Behe used as examples of irreducible complexity.
Creation of information 
Another new, and increasingly common, objection of creationists to evolution is that evolutionary mechanisms such as mutation cannot generate new information. Creationists such as William A. Dembski, Werner Gitt, and Lee Spetner have attempted to use information theory to dispute evolution. Dembski has argued that life demonstrates specified complexity, and that evolution without an intelligent agent cannot account for the generation of information that would be required to produce specified complexity.
These claims have been widely rejected by the scientific community; new information is regularly generated in evolution, whenever a novel mutation or gene duplication arises. Dramatic examples of entirely new, unique traits arising through mutation have been observed in recent years, such as the evolution of nylon-eating bacteria, which developed new enzymes to efficiently digest a material that never existed before the modern era. In fact, when an organism is considered together with the environment it evolved in, there is no need to account for the creation of information. The information in the genome forms a record of how it was possible to survive in a particular environment. It is not created, but rather gathered from the environment through research—by trial and error, as mutating organisms either reproduce or fail.
A related argument against evolution is that most mutations are harmful. However, the vast majority of mutations are neutral, and the minority of mutations which are beneficial or harmful are often situational; a mutation that is harmful in one environment may be helpful in another.
Violation of the second law of thermodynamics 
Another objection is that evolution violates the second law of thermodynamics. Though the law applies to all systems, in the case of a closed one it states, "the entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium". In other words, an ideal isolated system's entropy (a measure of the dispersal of energy in a physical system so that it is not available to do mechanical work) will tend to increase or stay the same, not decrease. Creationists argue that evolution violates this physical law by requiring a decrease in entropy, or disorder, over time.
This claim is based on a manifestation of the law only applicable to isolated systems, which do not exchange matter or energy with their surroundings. Organisms, in contrast, are open systems, as they constantly exchange energy and matter with their environment: for example animals eat food and excrete waste, and radiate and absorb heat. Similarly, the Earth absorbs energy from the Sun and emits energy back into space. The Sun-Earth-space system does not violate the second law, because the enormous increase in entropy due to the Sun and Earth radiating into space dwarfs the local decrease in entropy caused by the existence and evolution of self-organizing life.
Since the second law of thermodynamics has a precise mathematical definition, this argument can be analyzed quantitatively. This was done by physicist Daniel F. Styer, who concluded: "Quantitative estimates of the entropy involved in biological evolution demonstrate that there is no conflict between evolution and the second law of thermodynamics."
In a published letter to the editor of The Mathematical Intelligencer titled "How anti-evolutionists abuse mathematics", mathematician Jason Rosenhouse stated:
The fact is that natural forces routinely lead to decreases in entropy. Water freezes into ice and fertilised eggs turn into babies. Plants use sunlight to convert carbon dioxide and water into sugar and oxygen, but [we do] not invoke divine intervention to explain the process [...] thermodynamics offers nothing to dampen our confidence in Darwinism.
Moral implications 
Other common objections to evolution allege that evolution leads to objectionable results, including bad beliefs, behaviors, and events. It is argued that the teaching of evolution degrades values, undermines morals, and fosters irreligion or atheism. These may be considered appeals to consequences (a form of logical fallacy), as the potential ramifications of belief in evolutionary theory have nothing to do with its objective empirical reality.
Humans as animals 
Even though biology has long shown that humans are animals, some people feel that humans should be considered separate from, and/or superior to, animals. The mediaeval concept of a great chain of being set out a static hierarchy in which humans are "above" animals, but below angels and God. As evolutionary thought developed it was feared that evolution implied that there was no real separation between man and brute, and that it undermined human social hierarchy. Assertions of ape ancestry in the 1844 publication Vestiges of Creation gained much public acceptance but were scornfully attacked by establishment scientists, and though Darwin avoided the subject when announcing his theory in On the Origin of Species in 1859, the issue was quickly raised. Anatomists claimed that humans had unique physical features; however, English biologist Thomas Henry Huxley showed that they were wrong and overcame their opposition to Darwin's ideas. Evolutionary common descent does not imply that human beings should behave like other animals, but instead shows that animals behave in different ways, and teaches that humans behave like humans.
Traditionalists still object to the idea that diversity in life, including human beings, arose through natural processes without a need for supernatural intervention, and they argue against evolution on the basis that it contradicts their literal interpretation of creation myths about separate "kinds". However, many religions, such as Catholicism, have reconciled their beliefs with evolution through theistic evolution.
Social effects 
Some Creationists claim that perceived social ills like crime, teen pregnancies, homosexuality, abortion, immorality, wars, and genocide are caused by a belief in evolution. R. Albert Mohler, Jr., President of Southern Baptist Theological Seminary in Louisville, Kentucky, wrote August 8, 2005, in National Public Radio's forum, "Taking Issue", that "Debates over education, abortion, environmentalism, homosexuality and a host of other issues are really debates about the origin—and thus the meaning—of human life.... Evolutionary theory stands at the base of moral relativism and the rejection of traditional morality".
Former Texas Republican Representative Tom DeLay claimed that the Columbine school shootings were caused by the teaching of evolution. DeLay is quoted as stating that "Our school systems teach the children that they are nothing but glorified apes who are evolutionized [sic] out of some primordial soup." Henry M. Morris, engineering professor and founder of the Creation Research Society and the Institute of Creation Research, claims that evolution was part of a pagan religion that emerged after the Tower of Babel, was part of Plato's and Aristotle's philosophies, and was responsible for everything from war to pornography to the breakup of the nuclear family.
Rev. D. James Kennedy of The Center for Reclaiming America for Christ and Coral Ridge Ministries claims that Darwin was responsible for Adolf Hitler's atrocities. In D. James Kennedy's documentary, and the accompanying pamphlet with the same title, Darwin's Deadly Legacy, Kennedy states that "To put it simply, no Darwin, no Hitler." In his efforts to expose the "harmful effects that evolution is still having on our nation, our children, and our world", Kennedy also states that, "We have had 150 years of the theory of Darwinian evolution, and what has it brought us? Whether Darwin intended it or not, millions of deaths, the destruction of those deemed inferior, the devaluing of human life, increasing hopelessness." Discovery Institute fellow Richard Weikart has made similar claims, as have other creationists. The claim was central to Ben Stein's film Expelled: No Intelligence Allowed promoting intelligent design creationism. The Anti-Defamation League describes such claims as outrageous misuse of the Holocaust and its imagery, and as trivializing "the many complex factors that led to the mass extermination of European Jewry. Hitler did not need Darwin or evolution to devise his heinous plan to exterminate the Jewish people, and Darwin and evolutionary theory cannot explain Hitler's genocidal madness. Moreover, anti-Semitism existed long before Darwin ever wrote a word."
Kent Hovind of Creation Science Evangelism blames communism, socialism, World War I, World War II, racism, the Holocaust, Stalin's war crimes, the Vietnam War and Pol Pot's Cambodian killing fields on evolution, as well as the increase in crime, unwed mothers, and other social ills. Kent Hovind's son Eric Hovind has now taken over the family business while his father is in prison, and claims that evolution is responsible for tattoos, body piercing, premarital sex, unwed births, sexually transmitted diseases (STDs), divorce and child abuse.
Supporters of evolution dismiss such criticisms as counterfactual, and some argue that the opposite seems to be the case. A study published by the author and illustrator Gregory S. Paul found that religious beliefs, including belief in creationism and disbelief in evolution, are positively correlated with social ills like crime. The Barna Group surveys find that Christians and non-Christians in the US have similar divorce rates, and the highest divorce rates in the US are among Baptists and Pentecostals, both sects which reject evolution and embrace creationism.
Michael Shermer argued in Scientific American in October 2006 that evolution supports concepts like family values, avoiding lies, fidelity, moral codes and the rule of law. He goes on to suggest that evolution gives more support to the notion of an omnipotent creator, rather than a tinkerer with limitations based on a human model, the more common image subscribed to by creationists. Careful analysis of the creationist charges that evolution has led to moral relativism and the Holocaust yields the conclusion that these charges appear to be highly suspect. Such analyses conclude that the origins of the Holocaust are more likely to be found in historical Christian anti-semitism than in evolution.
Evolution has been used to justify Social Darwinism, the exploitation of "lesser breeds without the law" by "superior races," particularly in the nineteenth century. Strong, typically European, nations successfully expanded their empires, and as such, these strong nations could be said to have "survived" in the struggle for dominance. With this attitude, Europeans, with the exception of Christian missionaries, seldom adopted the customs and languages of local people under their empires.
Another charge leveled at evolutionary theory by creationists is that belief in evolution is either tantamount to atheism, or conducive to atheism. It is commonly claimed that all proponents of evolutionary theory are "materialistic atheists". On the other hand, Davis Young argues that creation science itself is harmful to Christianity because its bad science will turn more away than it recruits. Young asks, "Can we seriously expect non-Christians to develop a respect for Christianity if we insist on teaching the brand of science that creationism brings with it?" However, evolution neither requires nor rules out the existence of a supernatural being. Philosopher Robert Pennock makes the comparison that evolution is no more atheistic than plumbing. H. Allen Orr, professor of biology at University of Rochester, notes that:
Of the five founding fathers of twentieth-century evolutionary biology — Ronald Fisher, Sewall Wright, J. B. S. Haldane, Ernst Mayr, and Theodosius Dobzhansky — one was a devout Anglican who preached sermons and published articles in church magazines, one a practicing Unitarian, one a dabbler in Eastern mysticism, one an apparent atheist, and one a member of the Russian Orthodox Church and the author of a book on religion and science.
In addition, a wide range of religions have reconciled a belief in a supernatural being with evolution. Molleen Matsumura of the National Center for Science Education found that "of Americans in the twelve largest Christian denominations, 89.6% belong to churches that support evolution education". These churches include the United Methodist Church, National Baptist Convention USA, Evangelical Lutheran Church in America, Presbyterian Church (USA), National Baptist Convention of America, African Methodist Episcopal Church, the Roman Catholic Church, the Episcopal Church, and others. A poll in 2000 done for People for the American Way found that 70% of the American public felt that evolution was compatible with a belief in God. Only 48% of the people polled could choose the correct definition of evolution from a list, however.
One poll reported in the journal Nature showed that among American scientists (across various disciplines), about 40 percent believe in both evolution and an active deity (theistic evolution). This is similar to the results reported for surveys of the general American public. Also, about 40 percent of the scientists polled believe in a God that answers prayers, and believe in immortality. While about 55% of scientists surveyed were atheists, agnostics, or nonreligious theists, atheism is far from universal among scientists who support evolution, or among the general public that supports evolution. Very similar results were reported from a 1997 Gallup survey of the American public and scientists.
|Group||Belief in Young Earth Creationism||Belief in God-guided evolution||Belief in evolution without God guiding the process|
|*Includes persons with professional degrees in fields unrelated to evolution, such as computer science, chemical engineering, physics, psychology, business administration, etc.|
Various evolutionary ideas came to prominence around the start of the nineteenth century, in particular the transmutation of species theory put forward by Jean-Baptiste Lamarck. These were opposed on scientific grounds, most notably by Georges Cuvier, as well as meeting political and religious objections. These ideas that natural laws controlled the development of nature and society gained vast popular audiences with George Combe's The Constitution of Man of 1828 and the anonymous Vestiges of the Natural History of Creation of 1844. When Charles Darwin published his 1859 book On the Origin of Species, he convinced most of the scientific community that new species arose through descent through modification in a branching pattern of divergence from common ancestors within fifteen to twenty years, but while most accepted that natural selection was a valid and empirically testable hypothesis, his view that it was the primary mechanism of evolution was generally rejected.
The earliest objections to Darwinian evolution were both scientific and religious. Darwin's contemporaries eventually came to accept the transmutation of species based upon fossil evidence; forming the X Club to defend it against the church and wealthy amateurs, although the specific evolutionary mechanism which Darwin provided – natural selection – was actively disputed by alternative theories such as Lamarckism and orthogenesis. Darwin's gradualistic account was also opposed by saltationism and catastrophism. Lord Kelvin led scientific opposition to gradualism on the basis of his thermodynamic calculations that the Age of the Earth was between 24 and 400 million years old, an estimate strongly disputed by geologists. These figures were corrected in 1907 when radioactive dating of rocks showed that the Earth was billions of years old. Kelvin's own views favoured a version of theistic evolution accelerated by divine guidance. The specific hereditary mechanism Darwin provided, pangenesis, lacked any supporting evidence. In the early 20th century, pangenesis was replaced by Mendelian inheritance, leading to the rise of the modern evolutionary synthesis. The modern synthesis rose to universal acceptance among biologists with the help of new evidence, such as genetics, which confirmed Darwin's predictions and refuted the competing theories.
Protestantism, especially in America, broke out in "acrid polemics" and argument about evolution from 1860 to the 1870s – with the turning point possibly marked with the death of Louis Agassiz in 1873 – and by 1880 a form of "Christian evolution" was becoming the consensus. In Britain while publication of The Descent of Man by Darwin in 1871 reinvigorated debate from the previous decade, Sir Henry Chadwick notes a steady acceptance of evolution "among more educated Christians" between 1860 and 1885. This led evolutionary theory to be "both permissible and respectable" by 1876. Frederick Temple's lectures on Relations between Religion and Science (1884) speaking on how evolution was not "antagonistic" to religion highlighted this trend. Temple's appointment to Archbishop of Canterbury in 1896 showed the broad acceptance of evolution within the church hierarchy.
For decades Catholicism avoided official refutation of evolution. However, it would rein in Catholics who proposed that evolution could be reconciled with the Bible, as this conflicted with First Vatican Council's (1869–70) finding that everything was created out of nothing by God, and to question that could lead to excommunication. In 1950, the encyclical Humani Generis of Pope Pius XII first mentioned evolution directly and officially. It allowed for inquiry into humans coming from pre-existing living matter, but to not question Adam and Eve or the creation of the soul. In 1996, Pope John Paul II stated evolution was "more than a hypothesis" and acknowledged the large body of work accumulated in its support, but reiterated that any attempt to give a material explanation of the human soul was "incompatible with the truth about man."
Muslim reaction covered the gamut with those believing in literal creation from the Qur'an while many educated Muslims subscribed to a version of theistic or guided evolution where the Qur'an reinforced rather than contradicted mainstream science. This occurred relatively quickly as medieval Madrasahs taught ideas of Al-Jahiz, a Muslim scholar from the 9th century, who proposed concepts similar to natural selection. However, acceptance of evolution remains low in the Muslim world as prominent figures reject evolution's underpinning philosophy of materialism as unsound to human origins and a denial of Allah. Further objections by Muslim scholars and writers largely reflect those put forward in the Western world.
Regardless of acceptance from major religious hierarchies, early religious objections to Darwin's theory are still used in opposition to evolution. The ideas that species change over time through natural processes and that different species share common ancestors seemed to contradict the Genesis account of Creation. Believers in Biblical infallibility attacked Darwinism as heretical. The natural theology of the early 19th century was typified by Paley's watchmaker analogy, an argument from design still used by the creationist movement. Natural theology included a range of ideas and arguments from the outset, and when Darwin's theory was published, ideas of theistic evolution were presented in which evolution is accepted as a secondary cause open to scientific investigation, while still holding belief in God as a first cause with a non-specified role in guiding evolution and creating humans. This position has been adopted by denominations of Christianity and Judaism in line with modernist theology which views the Bible and Torah as allegorical thus removing the conflict between evolution and religion.
However, in the 1920s Christian fundamentalists in the United States developed their literalist arguments against Modernist theology into opposition to the teaching of evolution due to fears that Darwinism had led to German militarism and was a threat to religion and morality. This opposition developed into the creation-evolution controversy involving Christian literalists in the United States objecting to the teaching of evolution in public schools. Although early objections dismissed evolution for contradicting their interpretation of the Bible, this argument was invalidated when the Supreme Court ruled in Epperson v. Arkansas that forbidding the teaching of evolution on religious grounds violated the Establishment Clause.
Since then creationists have developed more nuanced objections to evolution, alleging variously that it is unscientific, infringes on creationists' religious freedoms or that the acceptance of evolution is a religious stance. Creationists have appealed to democratic principles of fairness, arguing that evolution is controversial, and that science classrooms should therefore "Teach the Controversy". These objections to evolution culminated in the intelligent design movement in the early 2000s that unsuccessfully attempted to present itself as a scientific alternative to evolution.
See also 
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- Nedin, C (1997). "On Archaeopteryx, Astronomers, and Forgery". The TalkOrigins Archive. Retrieved 2007-03-24.
- Wells, J (2002). Icons of Evolution. Regnery Publishing, Inc. ISBN 978-0-89526-200-4 [Amazon-US | Amazon-UK].
- "Icons of Evolution FAQs". The TalkOrigins Archive. 2006. Retrieved 2007-03-24.
- "CB701: Haeckel's embryo pictures.". talkorigins.org. Retrieved 2010-06-07.
- "Icon 4 — Haeckel's Embryos". National Center for Science Education. November 23, 2006. Retrieved 2008-12-17.
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- Isaak, M (2004). "Index to Creationist Claims, Claim CD010: Radiometric Dating". The TalkOrigins Archive. Retrieved 2007-03-24.
- Isaak, M (2004). "Index to Creationist Claims, CC200: Transitional fossils". The TalkOrigins Archive. Retrieved 2008-07-13.
- Isaak, M (2004). "Index to Creationist Claims, CC200.1: Transitional fossil abundance". The TalkOrigins Archive. Retrieved 2008-07-13.
- Isaak, M (2004). "Index to Creationist Claims, CC340: Out-of-place fossils". The TalkOrigins Archive. Retrieved 2008-07-13.
- Isaak, M (2004). "Index to Creationist Claims, Claim CC363: Requirements for fossilization". The TalkOrigins Archive. Retrieved 2007-03-24.
- Isaak, M (2004). "Index to Creationist Claims, CC201: Phyletic gradualism". The TalkOrigins Archive. Retrieved 2008-07-13.
- Wilkins, J (1997). "Evolution and Chance". The TalkOrigins Archive. Retrieved 2007-03-24.
- Battern, D (1995). "Cheating with chance". Answers in Genesis. Retrieved 2009-12-06.
- Lies, Damned Lies, Statistics, and Probability of Abiogenesis Calculations
- Scott EC, Matzke NJ (May 2007). "Biological design in science classrooms". Proc. Natl. Acad. Sci. U.S.A. 104 (suppl. 1): 8669–76. Bibcode:2007PNAS..104.8669S. doi:10.1073/pnas.0701505104. PMC 1876445. PMID 17494747.
- "CI100: Intelligent Design".
- Plantinga, A (1993). Warrant and Proper Function. Oxford University Press. doi:10.1093/0195078640.001.0001. ISBN 0-19-507864-0 [Amazon-US | Amazon-UK].
- Fitelson, B; Sober, E (1997). "Plantinga's Probability Arguments Against Evolutionary Naturalism" (PDF). Retrieved 2007-03-24.
- Isaak, M (2005). "Index to Creationist Claims, Claim CA120: Mind's fallibility". The TalkOrigins Archive. Retrieved 2007-03-24.
- Behe, MJ (1996-10-29). "Darwin under the microscope". New York Times. p. 25. Retrieved 2007-03-24.
- Johnson, P (1990). "Evolution as dogma: The establishment of naturalism". Retrieved 2007-03-24.
- "CB401: Inconceivable instinct". Retrieved 2009-12-05.
- "CB400: Evolution of consciousness". Retrieved 2009-12-05.
- Isaak, M (2004). "Index to Creationist Claims, Claim CE440: The origin of it all". theTalkOrigins Archive. Retrieved 2007-03-24.
- Jonathan Sarfati, Ph.D; 2003 Refuting Evolution 2. Master Books ISBN 0-89051-387-2 [Amazon-US | Amazon-UK]
- "CB921.2: Half a wing". talkorigins.org. Retrieved 2010-06-07.
- Gehring, W.J. (2005). "New Perspectives on Eye Development and the Evolution of Eyes and Photoreceptors". Journal of Heredity 96 (3): 171–184. doi:10.1093/jhered/esi027. PMID 15653558.
- "Eyes, Part One: Opening Up the Russian Doll. The Loom: A blog about life, past and future". Retrieved 2007-09-22.
- Behe, MJ (1996). Darwin's Black Box: The Biochemical Challenge to Evolution. Free Press. ISBN 978-0-7432-9031-9 [Amazon-US | Amazon-UK].
- Behe, Michael (2000-07-31). "Philosophical Objections to Intelligent Design: Response to Critics". Retrieved 2010-01-02.
- Liu, R.Y.; Ochman, H. (2007). "Stepwise formation of the bacterial flagellar system". PNAS 104 (17): 7116–7121. Bibcode:2007PNAS..104.7116L. doi:10.1073/pnas.0700266104. PMC 1852327. PMID 17438286.
- Isaak, M (2005). "Index to Creationist Claims, Claim CB200: Irreducible complexity". The TalkOrigins Archive. Retrieved 2007-03-24.; and references therein
- Ussery, D. (1999). "A biochemist's response to "The biochemical challenge to evolution"". Bios 70: 40–45.
- Aharoni, A.; Gaidukov, L.; Khersonsky, O.; Gould, S.M.; Roodveldt, C; Tawfik, D.S. (2005). "The 'evolvability' of promiscuous protein functions". Nature Genetics 37 (1): 73–76. doi:10.1038/ng1482. PMID 15568024.
- Robison, K (1996). "Darwin's Black Box: Irreducible Complexity or Irreproducible Irreducibility?". The TalkOrigins Archive. Retrieved 2007-03-24.
- Claramonte, V. (2009). "Darwin's golden flame. Responses of biochemistry to intelligent design". Teorema. XXVIII/2: 173–188.
- Gitt, Werner (1996). "Information, science and biology" Technical Journal 10:2.
- Musgrave, I; Baldwin, R, et al. (2005). "Information Theory and Creationism". The TalkOrigins Archive. Retrieved 2007-03-24.
- Thomas, D. "Evolution and Information: The Nylon Bug". New Mexicans for Science and Reason. Retrieved 2007-03-24.
- Bergstrom, CT; Lachmann, M (2006). "The fitness value of information". arXiv:q-bio.PE/0510007 [q-bio.PE].
- "CB101: Most mutations harmful?". talkorigins.org. Retrieved 2010-05-30.
- Harter, R (1999). "Are Mutations Harmful?". The TalkOrigins Archive. Retrieved 2007-03-24.
- Morris, Henry M. (1974). Scientific creationism. San Diego, Calif: Creation-Life Publishers. p. 45. ISBN 0-89051-003-2 [Amazon-US | Amazon-UK]. "Until evolutionists can not only speculate, but demonstrate, that there does exist in nature some vast program to direct the growth toward higher complexity of the marvelous organic space-time unity known as the terrestrial biosphere (not to mention that of the cosmos), as well as some remarkable global power converter to energize the growth through converted solar energy, the whole evolutionary idea is negated by the Second Law."
- Lambert, F (2002). "Disorder — A Cracked Crutch For Supporting Entropy Discussions". Journal of Chemical Education 79 (2): 187–192. Bibcode:2002JChEd..79..187L. doi:10.1021/ed079p187. Retrieved 2007-03-24.
- Oerter, RN (2006). "Does Life On Earth Violate the Second Law of Thermodynamics?". Retrieved 2007-03-24.
- Daniel F. Styer, "Entropy and evolution," American Journal of Physics, Vol. 76, No. 11, November 2008, p. 1031
- Emory F. Bunn, "Evolution and the Second Lqw of Thermodynamics," American Journal of Physics, Vol. 77, No. 10, October 2009, p. 922
- Rosenhouse, J (2001). "How Anti-Evolutionists Abuse Mathematics" (PDF). The Mathematical Intelligencer 23 (4): 3–8. Retrieved 2007-03-26.
- A venerable Orang-utang "I have to apologize once more for the wild flights of my incorrigible artist. I told him most clearly and positively to draw me a life-like portrait of that profound philosopher, Mr. Darwin..." – The Hornet, 1871, from the collection of Darwin Online
- Isaak, M (2004). "Claim CA009: Evolution teaches that people are animals. We should not be surprised when people who are taught evolution start behaving like animals". The TalkOrigins Archive. Retrieved 2007-03-24.
- Churches urged to challenge Intelligent Design
- Pope John Paul II, "Truth Cannot Contradict Truth", New Advent, ed. Kevin Knight, 2009-Feb-15 <http://www.newadvent.org/library/docs_jp02tc.htm>
- Morris, H (1982). The Troubled Waters of Evolution. Master Books. ISBN 978-0-89051-087-2 [Amazon-US | Amazon-UK].
- Mohler, RA (2005). "The Origins of Life: An Evangelical Baptist View". NPR. Retrieved 2007-03-24.
- "The Result of Believing Evolution". Living Word Bible Church. Retrieved 2007-03-24.
- Raymo, C (1999-09-06). "Darwin's Dangerous De-evolution". Boston Globe. Retrieved 2007-03-24.
- Morris, HM (1989). The Long War Against God: The History and Impact of the Creation/Evolution Conflict. Baker Book House. ISBN 0-89051-291-4 [Amazon-US | Amazon-UK].
- "Kennedy: Evolution to Blame for Death, Hopelessness in World". Right Wing Watch. Retrieved 2007-03-24.
- Martin, A; Parker, J (2006). "TV Producer Defends Documentary Exposing Darwin-Hitler Link". Agape Press. Retrieved 2007-03-24.
- "ADL Blasts Christian Supremacist TV Special & Book Blaming Darwin For Hitler". Anti-Defamation League. August 22, 2006. Retrieved 2009-12-07.
- Weikart, R (2004). From Darwin to Hitler: Evolutionary Ethics, Eugenics, and Racism in Germany. Palgrave Macmillan. ISBN 978-1-4039-7201-9 [Amazon-US | Amazon-UK].
- From Darwin to Hitler: A Pathway to Horror (Updated), Jonathan Witt, Evolution News and Views, Discovery Institute, December 15, 2006.
- This creationist claim that is part of a Discovery Institute campaign (New book by Discovery Institute Fellow shows influence of Darwinian principles on Hitler's Nazi regime, Discovery Institute) and is amply repeated in creationist literature. For example:
- "Darwinism and the Nazi race Holocaust", Jerry Bergman, CEN Technical Journal, 13(2):101–111, 1999.
- The Holocaust and evolution, Jonathan Sarfati, Creation 22(1):4, December 1999.
- From Darwin to Hitler: Evolutionary Ethics, Eugenics, and Racism in Germany, Richard Weikart, Palgrave MacMillan, 2004.
- "Anti-Evolution Film Misappropriates the Holocaust". Anti-Defamation League. April 29, 2008. Retrieved 2009-12-07.
"Intelligent Design: It's Not Science – Religious Freedom Resources". Anti-Defamation League. 2009. Retrieved 2009-12-07.
- Creationist Links Origins to Faith, Everyday Life: Says outlook on Genesis account affects every aspect of life , Bob Ellis, Dakota Voice, 5/7/2006
- Paul, GS (2005). "Cross-National Correlations of Quantifiable Societal Health with Popular Religiosity and Secularism in the Prosperous Democracies: A First Look". Journal of Religion & Society 7. Archived from the original on 2007-03-10. Retrieved 2007-03-24.
The paper was criticized by Moreno-Riaño, Smith, and Mach in a published article in the same journal because "[Paul's] methodological problems do not allow for any conclusive statement to be advanced regarding the various hypotheses Paul seeks to demonstrate or falsify." Of course, correlation does not imply causality, and Paul does not produce any speculations about the cause of these correlations.
- "Born Again Christians Just As Likely to Divorce As Are Non-Christians". The Barna Group. 2004. Retrieved 2004-03-24.
- Shermer, M (2006). "Darwin on the Right: Why Christians and conservatives should accept evolution". Scientific American. Retrieved 2007-04-26.
- Darwin and Hitler: a not-very-intelligent link, Michael Ruse, My View, Tallahassee Democrat, February 6, 2008
- Talkorigins Claim CA006.1: Adolf Hitler exploited the racist ideas of Darwinism to justify genocide, Mark Isaak, Index to Creationist Claims, Talkorigins, created 2001-4-29, modified 2005-7-1, © 2006
- Creationists for Genocide, Hector Avalos, Talkreason
- Western Civilization: Ideas, Politics, and Society. Houghton Mifflin Harcourt Publishing Company. 2008-10. ISBN 978-0-547-14701-7 [Amazon-US | Amazon-UK]. Retrieved 2007–03–25. "The most extreme ideological expression of nationalism and imperialism was Social Darwinism. In the popular mind, the concepts of evolution justified the exploitation of "lesser breeds without the law" by superior races. This language of race and conflict, of superior and inferior people, had wide currency in the Western states. Social Darwinists vigorously advocated the acquisition of empires, saying that strong nations-by definition, those that were successful at expanding industry and empire-would survive and that others would not. To these elitists, all white men were more fit than non-whites to prevail in the struggle for dominance. Even among Europeans, some nations were deemed more fit than others for the competition. Usually, Social Darwinists thought their own nation the best, an attitude that sparked their competitive enthusiasm. In the nineteenth century, in contrast to the seventeenth and eighteenth centuries, Europeans, except for missionaries, rarely adopted the customs or learned the languages of local people. They had little sense that other cultures and other people had merit or deserved respect. Many westerners believed that it was their duty as Christians to set an example and to educate others. Missionaries were the first to meet and learn about many peoples and were the first to develop writing for those without a written language. Christian missionaries were ardently opposed to slavery."
- Strobel, Lee (2004). The Case for a Creator. Zondervan. p. 32. ISBN 0-310-24144-8 [Amazon-US | Amazon-UK]. "In my quest to determine if contemporary science points toward or away from God, I knew I had to first examine the claims of evolution in order to conclude once and for all whether Darwinism creates a reasonable foundation for atheism. That's because if the materialism of Darwinian evolution is a fact, then the atheist conclusions I reached as a student might still be valid."
- Johnson, Phillip (1999). "The Church of Darwin". Wall Street Journal. Retrieved 2010-05-23.
- Young, D (1988). Christianity and the Age of the Earth. Artisan Publishers. ISBN 0-934666-27-X [Amazon-US | Amazon-UK].
- Pennock, RT (2000). Tower of Babel: The Evidence Against the New Creationism. MIT Press. ISBN 978-0-262-66165-2 [Amazon-US | Amazon-UK]. Retrieved 2007-03-24.
- Devolution: Why intelligent design isn’t, H. Allen Orr, Annals of Science, The New Yorker, May 30, 2005.
- "Statements from Religious Organizations". National Center for Science Education. 2002. Retrieved 2007-03-24.
- Schrock, JR (2005-05-17). "Christianity, Evolution Not in Conflict" (PDF). Wichita Eagle. pp. 17A. Retrieved 2007-03-24.
- "Evolution and Creationism In Public Education: An In-depth Reading Of Public Opinion" (PDF). People for the American Way. 2002. Retrieved 2007-03-24.
- Larson, EJ; Witham, L (1997). "Scientists are still keeping the faith". Nature 386 (6624): 435–436. Bibcode:1997Natur.386..435L. doi:10.1038/386435a0.
- Witham, L (1997). "Many scientists see God's hand in evolution". Reports of the National Center for Science Education 17 (6): 33. Retrieved 2007-03-24.
- Robinson, BA (1995). "Public beliefs about evolution and creation". Retrieved 2007-03-24.
- England, P.; Molnar, P.; Righter, F. (January 2007). "John Perry's neglected critique of Kelvin's age for the Earth: A missed opportunity in geodynamics". GSA Today 17 (1): 4–9. doi:10.1130/GSAT01701A.1.
- Boltwood, B. B. (1907). "On the ultimate disintegration products of the radio-active elements. Part II. The disintegration products of uranium". American Journal of Science 23: 77–88.
- Bowler, Peter J. (1983). The eclipse of Darwinism: anti-Darwinian evolution theories in the decades around 1900 (paperback ed.). Baltimore: Johns Hopkins University Press. pp. 23–24. ISBN 0-8018-4391-X [Amazon-US | Amazon-UK].
- Bowler, PJ (2003). Evolution: The History of an Idea, Third Edition, Completely Revised and Expanded. University of California Press. ISBN 978-0-520-23693-6 [Amazon-US | Amazon-UK].
- Moore, James R. (1981). The Post-Darwinian Controversies: A Study of the Protestant Struggle to Come to Terms with Darwin in Great Britain and America. Cambridge University Press. p. 10. ISBN 978-0-521-28517-9 [Amazon-US | Amazon-UK].
- The Relations Between Religion and Science by Frederick Temple Lecture IV of Eight Lectures Preached Before the University of Oxford in 1884
- Pius XII, encyclical Humani Generis
- John Paul II, Message to the Pontifical Academy of Sciences on Evolution
- Abdul Majid (2002). "The Muslim Responses To Evolution". Islamic Research Foundation International, Inc. Retrieved 2010-05-24.
- Adnan Oktar (1999). "The Evolution Deceit". Retrieved 2010-05-24.
- "Darwin Correspondence Project – Darwin and design: historical essay". Archived from the original on 2008-06-19. Retrieved 2008-09-02.
- "Evolution is Religion". Retrieved 2010-05-01.
- "Polls Apart on Human Origins". Harris Interactive. Retrieved 2008-10-27.
Further reading 
- Philip Kitcher 1982 Abusing Science: The Case Against Creationism. Cambridge: The MIT Press
- Jonathan Sarfati, Ph.D; 2003 Refuting Evolution 2. Master Books ISBN 0-89051-387-2 [Amazon-US | Amazon-UK]
- Coleman, Simon; Leslie Carlin (2004). The Cultures of Creationism: Antievolution in English-speaking Countries. Burlington, Vermont: Ashgate. p. 195. ISBN 0-7546-0912-X [Amazon-US | Amazon-UK].
- Isaak, Mark (2005). The Counter-Creationism Handbook. Westport, Connecticut: Greenwood Press. p. 330. ISBN 0-313-33305-X [Amazon-US | Amazon-UK].
- Rennie J (July 2002). "15 answers to creationist nonsense" (PDF). Sci. Am. 287 (1): 78–85. doi:10.1038/scientificamerican0702-78. PMID 12085506.