In his section on organs of extreme perfection and complication, Darwin himself recognized that while the eye was a challenge for his theory, there was plenty of evidence to suggest it evolved by many small steps starting with a simple light sensitive patch. Evolution has produced many different types of eyes, from simple to complex, many different times, indicating eyes are not irreducible and not an impossibly complex problem. Since many aspects of the eye can be easily reduced to numbers. Nilsson and Pelzer were able to perform a computer simulation of the evolution of the eye using tiny, non-overlapping steps. Despite using very conservative parameters, they found the modern eye could evolve in less than 400,000 generations – a blink of the eye in geological time. [p113]
Are eyes irreducibly complex?
Eyes are one of the examples Behe uses as being “irreducibly complex.”
