Anaximander's idea of evolution was basically just speculative fiction. He simply suggested that man and animals came from water with no evidence whatsoever, a

Anaximander's idea of evolution was basically just speculative fiction. He simply suggested that man and animals came from water with no evidence whatsoever, and that early man must've needed to survive in the mouths of fish to withstand the elements. Darwin actually collected scientific data and observations from finches, fossils, and brachiopods to substantiate his claims. The key observation needed to make the theory work was an understanding that the Earth was millions of years old, which was only recently established (speculated by folks like his grandfather Erasmus Darwin and confirmed by his colleague Charles Lyell)