Darwinism(Redirected from Darwinian evolution)
Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce. Also called Darwinian theory, it originally included the broad concepts of transmutation of species or of evolution which gained general scientific acceptance after Darwin published On the Origin of Species in 1859, including concepts which predated Darwin's theories. It subsequently referred to the specific concepts of natural selection, the Weismann barrier, or the central dogma of molecular biology. Though the term usually refers strictly to biological evolution, creationists have appropriated it to refer to the origin of life, and it has even been applied to concepts of cosmic evolution, both of which have no connection to Darwin's work. It is therefore considered the belief and acceptance of Darwin's and of his predecessors' work—in place of other theories, including divine design and extraterrestrial origins.
English biologist Thomas Henry Huxley coined the term Darwinism in April 1860. It was used to describe evolutionary concepts in general, including earlier concepts published by English philosopher Herbert Spencer. Many of the proponents of Darwinism at that time, including Huxley, had reservations about the significance of natural selection, and Darwin himself gave credence to what was later called Lamarckism. The strict neo-Darwinism of German evolutionary biologist August Weismann gained few supporters in the late 19th century. During the approximate period of the 1880s to about 1920, sometimes called "the eclipse of Darwinism", scientists proposed various alternative evolutionary mechanisms which eventually proved untenable. The development of the modern synthesis in the early 20th century, incorporating natural selection with population genetics and Mendelian genetics, revived Darwinism in an updated form.
While the term Darwinism has remained in use amongst the public when referring to modern evolutionary theory, it has increasingly been argued by science writers such as Olivia Judson and Eugenie Scott that it is an inappropriate term for modern evolutionary theory. For example, Darwin was unfamiliar with the work of the Moravian scientist and Augustinian friar Gregor Mendel, and as a result had only a vague and inaccurate understanding of heredity. He naturally had no inkling of later theoretical developments and, like Mendel himself, knew nothing of genetic drift, for example. In the United States, creationists often use the term "Darwinism" as a pejorative term in reference to beliefs such as scientific materialism, but in the United Kingdom the term has no negative connotations, being freely used as a shorthand for the body of theory dealing with evolution, and in particular, with evolution by natural selection.
Conceptions of DarwinismEdit
While the term Darwinism had been used previously to refer to the work of Erasmus Darwin in the late 18th century, the term as understood today was introduced when Charles Darwin's 1859 book On the Origin of Species was reviewed by Thomas Henry Huxley in the April 1860 issue of the Westminster Review. Having hailed the book as "a veritable Whitworth gun in the armoury of liberalism" promoting scientific naturalism over theology, and praising the usefulness of Darwin's ideas while expressing professional reservations about Darwin's gradualism and doubting if it could be proved that natural selection could form new species, Huxley compared Darwin's achievement to that of Nicolaus Copernicus in explaining planetary motion:
What if the orbit of Darwinism should be a little too circular? What if species should offer residual phenomena, here and there, not explicable by natural selection? Twenty years hence naturalists may be in a position to say whether this is, or is not, the case; but in either event they will owe the author of "The Origin of Species" an immense debt of gratitude.... And viewed as a whole, we do not believe that, since the publication of Von Baer's "Researches on Development," thirty years ago, any work has appeared calculated to exert so large an influence, not only on the future of Biology, but in extending the domination of Science over regions of thought into which she has, as yet, hardly penetrated.
These are the basic tenets of evolution by natural selection as defined by Darwin:
- More individuals are produced each generation that can survive.
- Phenotypic variation exists among individuals and the variation is heritable.
- Those individuals with heritable traits better suited to the environment will survive.
- When reproductive isolation occurs new species will form.
Another important evolutionary theorist of the same period was the Russian geographer and prominent anarchist Peter Kropotkin who, in his book Mutual Aid: A Factor of Evolution (1902), advocated a conception of Darwinism counter to that of Huxley. His conception was centred around what he saw as the widespread use of co-operation as a survival mechanism in human societies and animals. He used biological and sociological arguments in an attempt to show that the main factor in facilitating evolution is cooperation between individuals in free-associated societies and groups. This was in order to counteract the conception of fierce competition as the core of evolution, which provided a rationalization for the dominant political, economic and social theories of the time; and the prevalent interpretations of Darwinism, such as those by Huxley, who is targeted as an opponent by Kropotkin. Kropotkin's conception of Darwinism could be summed up by the following quote:
In the animal world we have seen that the vast majority of species live in societies, and that they find in association the best arms for the struggle for life: understood, of course, in its wide Darwinian sense—not as a struggle for the sheer means of existence, but as a struggle against all natural conditions unfavourable to the species. The animal species, in which individual struggle has been reduced to its narrowest limits, and the practice of mutual aid has attained the greatest development, are invariably the most numerous, the most prosperous, and the most open to further progress. The mutual protection which is obtained in this case, the possibility of attaining old age and of accumulating experience, the higher intellectual development, and the further growth of sociable habits, secure the maintenance of the species, its extension, and its further progressive evolution. The unsociable species, on the contrary, are doomed to decay.— Peter Kropotkin, Mutual Aid: A Factor of Evolution (1902), Conclusion
"Darwinism" soon came to stand for an entire range of evolutionary (and often revolutionary) philosophies about both biology and society. One of the more prominent approaches, summed in the 1864 phrase "survival of the fittest" by Herbert Spencer, later became emblematic of Darwinism even though Spencer's own understanding of evolution (as expressed in 1857) was more similar to that of Jean-Baptiste Lamarck than to that of Darwin, and predated the publication of Darwin's theory in 1859. What is now called "Social Darwinism" was, in its day, synonymous with "Darwinism"—the application of Darwinian principles of "struggle" to society, usually in support of anti-philanthropic political agenda. Another interpretation, one notably favoured by Darwin's half-cousin Francis Galton, was that "Darwinism" implied that because natural selection was apparently no longer working on "civilized" people, it was possible for "inferior" strains of people (who would normally be filtered out of the gene pool) to overwhelm the "superior" strains, and voluntary corrective measures would be desirable—the foundation of eugenics.
In Darwin's day there was no rigid definition of the term "Darwinism", and it was used by opponents and proponents of Darwin's biological theory alike to mean whatever they wanted it to in a larger context. The ideas had international influence, and Ernst Haeckel developed what was known as Darwinismus in Germany, although, like Spencer's "evolution", Haeckel's "Darwinism" had only a rough resemblance to the theory of Charles Darwin, and was not centered on natural selection. In 1886, Alfred Russel Wallace went on a lecture tour across the United States, starting in New York and going via Boston, Washington, Kansas, Iowa and Nebraska to California, lecturing on what he called "Darwinism" without any problems.
In his book Darwinism (1889), Wallace had used the term pure-Darwinism which proposed a "greater efficacy" for natural selection. George Romanes dubbed this view as "Wallaceism", noting that in contrast to Darwin, this position was advocating a "pure theory of natural selection to the exclusion of any supplementary theory." Taking influence from Darwin, Romanes was a proponent of both natural selection and the inheritance of acquired characteristics. The latter was denied by Wallace who was a strict selectionist. Romanes' definition of Darwinism conformed directly with Darwin's views and was contrasted with Wallace's definition of the term.
The term Darwinism is often used in the United States by promoters of creationism, notably by leading members of the intelligent design movement, as an epithet to attack evolution as though it were an ideology (an "ism") of philosophical naturalism, or atheism. For example, UC Berkeley law professor and author Phillip E. Johnson makes this accusation of atheism with reference to Charles Hodge's book What Is Darwinism? (1874). However, unlike Johnson, Hodge confined the term to exclude those like American botanist Asa Gray who combined Christian faith with support for Darwin's natural selection theory, before answering the question posed in the book's title by concluding: "It is Atheism." Creationists use the term Darwinism, often pejoratively, to imply that the theory has been held as true only by Darwin and a core group of his followers, whom they cast as dogmatic and inflexible in their belief. In the 2008 documentary film Expelled: No Intelligence Allowed, which promotes intelligent design (ID), American writer and actor Ben Stein refers to scientists as Darwinists. Reviewing the film for Scientific American, John Rennie says "The term is a curious throwback, because in modern biology almost no one relies solely on Darwin's original ideas... Yet the choice of terminology isn't random: Ben Stein wants you to stop thinking of evolution as an actual science supported by verifiable facts and logical arguments and to start thinking of it as a dogmatic, atheistic ideology akin to Marxism." 
However, Darwinism is also used neutrally within the scientific community to distinguish the modern evolutionary synthesis, sometimes called "neo-Darwinism", from those first proposed by Darwin. Darwinism also is used neutrally by historians to differentiate his theory from other evolutionary theories current around the same period. For example, Darwinism may be used to refer to Darwin's proposed mechanism of natural selection, in comparison to more recent mechanisms such as genetic drift and gene flow. It may also refer specifically to the role of Charles Darwin as opposed to others in the history of evolutionary thought—particularly contrasting Darwin's results with those of earlier theories such as Lamarckism or later ones such as the modern evolutionary synthesis.
In political discussions in the United States, the term is mostly used by its enemies. "It's a rhetorical device to make evolution seem like a kind of faith, like 'Maoism,'" says Harvard University biologist E. O. Wilson. He adds, "Scientists don't call it 'Darwinism'." In the United Kingdom the term often retains its positive sense as a reference to natural selection, and for example British ethologist and evolutionary biologist Richard Dawkins wrote in his collection of essays A Devil's Chaplain, published in 2003, that as a scientist he is a Darwinist.
In his 1995 book Darwinian Fairytales, Australian philosopher David Stove used the term "Darwinism" in a different sense than the above examples. Describing himself as non-religious and as accepting the concept of natural selection as a well-established fact, Stove nonetheless attacked what he described as flawed concepts proposed by some "Ultra-Darwinists." Stove alleged that by using weak or false ad hoc reasoning, these Ultra-Darwinists used evolutionary concepts to offer explanations that were not valid (e.g., Stove suggested that sociobiological explanation of altruism as an evolutionary feature was presented in such a way that the argument was effectively immune to any criticism). Philosopher Simon Blackburn wrote a rejoinder to Stove, though a subsequent essay by Stove's protegee James Franklin's suggested that Blackburn's response actually "confirms Stove's central thesis that Darwinism can 'explain' anything."
- Wilkins, John (21 December 1998). "So You Want to be an Anti-Darwinian: Varieties of Opposition to Darwinism". TalkOrigins Archive. Houston, TX: The TalkOrigins Foundation, Inc. Retrieved 2008-06-19.
- "…on what evolution explains". Expelled Exposed. Oakland, CA: National Center for Science Education. Retrieved 2015-11-15.
- Le Fèvre, Olivier; Marinoni, Christian (6 December 2006). "Do Galaxies Follow Darwinian Evolution?" (Press release). Marseille, France: European Southern Observatory. eso0645. Retrieved 2015-11-15.
- Huxley, T.H. (April 1860). "ART. VIII.—Darwin on the Origin of Species". Westminster Review (Book review). London: Baldwin, Cradock, and Joy. 17: 541–570. Retrieved 2008-06-19.
What if the orbit of Darwinism should be a little too circular?
- Bowler 2003, pp. 179, 222–225, 338–339, 347
- Scott, Eugenie C.; Branch, Glenn (16 January 2009). "Don't Call it 'Darwinism'". Evolution: Education and Outreach. New York: Springer Science+Business Media. 2 (1): 90–94. doi:10.1007/s12052-008-0111-2. ISSN 1936-6426.
- Judson, Olivia (15 July 2008). "Let's Get Rid of Darwinism". The New York Times. New York: The New York Times Company. ISSN 0362-4331. Retrieved 2015-11-16.
- Sclater, Andrew (June 2006). "The extent of Charles Darwin's knowledge of Mendel". Journal of Biosciences. Bangalore, India: Indian Academy of Sciences / Springer India. 31 (2): 191–193. doi:10.1007/BF02703910. ISSN 0250-5991. PMID 16809850.
- Moran, Laurence (22 January 1993). "Random Genetic Drift". TalkOrigins Archive. Houston, TX: The TalkOrigins Foundation, Inc. Retrieved 2008-06-27.
- Hanes, Joel. "What is Darwinism?". TalkOrigins Archive. Houston, TX: The TalkOrigins Foundation, Inc. Retrieved 2008-06-19.
- Browne 2002, pp. 376–379
- Blinderman, Charles; Joyce, David. "Darwin's Bulldog". The Huxley File. Worcester, MA: Clark University. Retrieved 2008-06-29.
- Browne 2002, pp. 105–106
- Kropotkin 1902, p. 293
- Schmitt S. (2009). Haeckel: A German Darwinian? Comptes Rendus Biologies: 332: 110-118.
- Tippett, Krista (host); Moore, James (5 February 2009). "Evolution and Wonder: Understanding Charles Darwin". Speaking of Faith with Krista Tippett (Transcript). NPR. Retrieved 2015-11-16.
- Wallace, Alfred Russel. (1889). Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its Applications. Macmillan and Company.
- Heilbron, John L. (2003). The Oxford Companion to the History of Modern Science. OUP USA. p. 203. ISBN 978-0195112290
- Romanes, John George. (1906). "Darwin and After Darwin: An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions". Volume 2: Heredity and Utility. The Open Court Publishing Company. p. 12
- Costa, James T. (2014). Wallace, Darwin, and the Origin of Species. Harvard University Press. p. 274. ISBN 978-0674729698
- Bolles, R. C; Beecher, M. D. (1987). Evolution and Learning. Psychology Press. p. 45. ISBN 978-0898595420
- Elsdon-Baker, F. (2008). Spirited dispute: the secret split between Wallace and Romanes. Endeavour 32(2): 75-78
- Scott 2007, "Creation Science Lite: 'Intelligent Design' as the New Anti-Evolutionism," p. 72
- Johnson, Phillip E. (31 August 1996). "What is Darwinism?". Access Research Network. Colorado Springs, CO. Retrieved 2007-01-04. "This paper was originally delivered as a lecture at a symposium at Hillsdale College, in November 1992. Papers from the Symposium were published in the collection Man and Creation: Perspectives on Science and Theology (Bauman ed. 1993), by Hillsdale College Press, Hillsdale MI 49242."
- Ropp, Matthew. "Charles Hodge and His Objection to Darwinism: The Exclusion of Intelligent Design". theRopps.com. Chesterbrook, PA. Retrieved 2007-01-04. Paper for CH506: American Church History, Dr. Nathan Feldmeth, Winter Quarter 1997, "written while a student in the School of World Mission at Fuller Theological Seminary, Pasadena, California."
- Hodge 1874
- Sullivan, Morris (Spring 2005). "From the Beagle to the School Board: God Goes Back to School". Impact Press. Orlando, FL: Loudmouth Productions (56). Retrieved 2008-09-18.
- Rennie, John (9 April 2008). "Ben Stein's Expelled: No Integrity Displayed". Scientific American. Stuttgart: Georg von Holtzbrinck Publishing Group. ISSN 0036-8733. Retrieved 2015-11-16.
- Adler, Jerry (28 November 2005). "Charles Darwin: Evolution of a Scientist". Newsweek. 146 (22). New York: Newsweek LLC. pp. 50–58. ISSN 0028-9604. Retrieved 2015-11-16.
- Sheahen, Laura. "Religion: For Dummies". Beliefnet. Norfolk, VA: BN Media, LLC. Retrieved 2015-11-16.
- Stove 1995
- Blackburn, Simon (October 1996). "I Rather Think I Am a Darwinian". Philosophy. Cambridge, UK: Cambridge University Press on behalf of Royal Institute of Philosophy. 71 (278): 605–616. doi:10.1017/s0031819100053523. ISSN 0031-8191. JSTOR 3751128.
- Franklin, James (January 1997). "Stove's Anti-Darwinism" (PDF). Philosophy. Cambridge, UK: Cambridge University Press on behalf of Royal Institute of Philosophy. 72 (279): 133–136. doi:10.1017/s0031819100056692. ISSN 0031-8191. JSTOR 3751309.
- Bowler, Peter J. (2003). Evolution: The History of an Idea (3rd completely rev. and expanded ed.). Berkeley, CA: University of California Press. ISBN 0-520-23693-9. LCCN 2002007569. OCLC 49824702.
- Browne, Janet (2002). Charles Darwin: The Power of Place. 2. London: Jonathan Cape. ISBN 0-679-42932-8. LCCN 94006598. OCLC 733100564.
- Hodge, Charles (1874). What is Darwinism?. New York: Scribner, Armstrong, and Company. LCCN 06012878. OCLC 11489956. Retrieved 2015-11-16.
- Kropotkin, Peter (1902). Mutual Aid: A Factor of Evolution. New York: McClure Phillips & Co. LCCN 03000886. OCLC 1542829. Mutual aid; a factor of evolution (1902) on the Internet Archive Retrieved 2015-11-17.
- Petto, Andrew J.; Godfrey, Laurie R., eds. (2007) [Originally published 2007 as Scientists Confront Intelligent Design and Creationism]. Scientists Confront Creationism: Intelligent Design and Beyond. New York: W. W. Norton & Company. ISBN 978-0-393-33073-1. LCCN 2006039753. OCLC 173480577.
- Stove, David (1995). Darwinian Fairytales. Avebury Series in Philosophy. Aldershot, Hants, England; Brookfield, VT: Avebury. ISBN 1-85972-306-3. LCCN 95083037. OCLC 35145565.
- (in Russian) Danilevsky, Nikolay. 1885-1889 Darwinism: A Critical Study (Дарвинизм. Критическое исследование) at Runivers.ru in DjVu format.
- Fiske, John. (1885). Darwinism, and Other Essays. Houghton Mifflin and Company.
- Huxley, Thomas Henry. (1893). Darwiniana: Essays. Macmillan and Company.
- Mayr, Ernst. (1985). The Growth of Biological Thought: Diversity, Evolution, and Inheritance. Harvard University Press.
- Romanes, John George. (1906). Darwin and After Darwin: An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions. Volume 2: Heredity and Utility. The Open Court Publishing Company.
- Wallace, Alfred Russel. (1889). Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its Applications. Macmillan and Company.
|Look up darwinism in Wiktionary, the free dictionary.|
- Lennox, James (26 May 2015). "Darwinism". In Zalta, Edward N. Stanford Encyclopedia of Philosophy (Summer 2015 ed.). Stanford, CA: The Metaphysics Research Lab, Center for the Study of Language and Information (CSLI), Stanford University. Retrieved 2015-11-16.