IMO, Professor Dawkins offered a very plausible theory on the origin of humankind on Earth. I don't think he was being arrogant. He was simply stating an objective assessment based upon his observations. With all due respect, the people who show hubris are those who dogmatically insist their own religion is the only truth and all other religions or theories are false. Wars have been fought and millions have died because of that kind of thinking. We need to be tolerant, if not accepting, of other viewpoints.