Chapter 1 - Explaining the very improbable.
Humans are very complex beings made up of thousands of different systems.
We are built for hunting, feeding mating and child rearing. We assume there is a designer. Title of book from William Paley's book of 1802 which argues for a creator of such a complex world, like a watch has a creator. Dawkins claims that if there is a watchmaker then he is blind as there is not ultimate purpose in evolution. The improbablity of a certain event happening is lessened with hindsight.