Richard Dawkins explains why evolution is a fact beyond reasonable doubt in his latest book, The Greatest Show On Earth:
Evolution is a fact. Beyond reasonable doubt, beyond serious doubt, beyond sane, informed, intelligent doubt evolution is a fact. The evidence for evolution is at least as strong for the evidence for the Holocaust, even allowing for eye witnesses to the Holocaust.
It is the plain truth that we are cousins of chimpanzees, somewhat more distant cousins of monkeys, more distant cousins still of aardvarks and manatees, yet more distant cousins f bananas and turnips… continue the list as long as desired. That didn’t have to be true. It is not self-evidently, tautologically, obviously true, and there was a time when most people, even educated people, thought it wasn’t. It didn’t have to be true, but it is. We now this because a rising flood of evidence supports it.
Evolution is a fact, and this book will demonstrate it. No reputable scientist disputes it, and no unbiased reader will close the book doubting it. (p. 8-9)
I agree with Dawkins that the evidence for evolution is overwhelming for someone who looks at it with an open mind. Though I’m not sure about the “no reputable scientist disputes it” part. Perhaps that should be “no reputable biologist disputes it,” because that is their discipline — a biologist who denies evolution is like a computer scientist who denies operating systems.
I’m sure there are Christian scientists (the career, not the cult) who dispute evolution, but that doesn’t mean they are not reputable physicists or geologists. It just means they’re brainwashed into believing the Bible over reality.
Dawkins also says, “no unbiased reader will close the book doubting [evolution].” But how can a reader be unbiased? Does such a specimen even exist?