On the popular fallacy that evolution has a predetermined direction, and the development of a responsible worldview based on free will
Jacques Dubochet
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IntroductionMost educated people do not understand Darwin's theory of evolution. This is because the idea that our legs are not made for walking or our eyes for seeing is difficult to grasp. Adepts of intelligent design have it easier. Furthermore, stating that life evolves without a goal and in the absence of finality is shocking for most people because it clashes with their idea of the meaning of life. In fact, the theory of evolution is intellectually satisfying and it can serve as a solid basis for a responsible worldview in the sense of the Enlightenment. It need not come into conflict with transcendental belief. Early teaching of the basic principles of science by qualified teachers, together with the creative involvement of scientists, will help the general public to appreciate what the theory of evolution calls for, namely a worldview based on reality rather than on mysticism and dogma.Among the many events organized in 2009 for the celebration of Darwin's 200th birthday and the 150th anniversary of his major work, On the Origin of Species by means of Natural Selection [1], I was one of a group of volunteers willing to respond to requests for talks or discussions with the general public. Taking advantage of these encounters with educated lay people, I proposed a test consisting of one unique question: ''Write down in a few words, the essential elements of Darwin's theory of evolution.'' To make things clear, I offered my own answer to a similar question about Newton's gravitation theory: ''The same natural law governs the fall of an apple and the movements of celestial bodies.'' The result of the test was telling. Less than 20% of the answers were correct, but all shone light on the encountered obstacles. About half of the participants proposed the simple statement that the theory of evolution is. . . evolution, which located them close to a zero level of sound understanding. Another 20% referred to transformation, adaptation, shaping, or reaction, implying some Lamarck-type mechanism of evolution. The idea that life tends toward ''something'', reminiscent of Theilard de Chardin's omega point [2] was also frequently expressed. We were surprised that nearly 10% of the participants considered that the driving force of evolution is a flow toward complexity. These observations are similar to what has been reported elswhere [3][4][5] (http://www.britishcouncil.org/new/pressoffice/press-releases/Darwin-survey-showsinternational-consensus-on-acceptance-ofevolution/, consulted 09.10.2010). Why this poor understanding? We see two major reasons.
The theory of evolution is counterintuitiveThe first reason is simple. The intuitive theory of life is not that of Darwin. It is the one that supposes finality. Who believes that our legs were not made for walking and our eyes for seeing? It appears natural to imagine that the structures we observe in the living world hav...