Conclusion Such arguments could not be supported using the biological ideas of Aristotle, since his concept of species included the idea that all individuals are alike. Individual differences, like hair color, are unimportant because they are not promoted by a final cause. However, individual differences are the cornerstone of evolution through natural selection. Without individual differences, natural selection, and therefore evolution, could not occur. For this reason, individuality is seen by biologists as the most important aspect of living organisms.
Some biologists attempt to describe evolution teleologically.
This is not possible, as evolution through natural selection can not be described as goal-directed since it occurs as a result of past events or mutations, not in anticipation of future events. Aristotle used teleology to explain biology because he could not conceive that disorder and purposelessness could give rise to order and purpose. Darwinism supports the theory that natural selection is a process that brings order out of randomness. Order, Purpose and Divine Direction are all very comforting to humans. That is one reason why Aristotle's teleological views survived for over 2,000 years.