[Chance] has become for me a soft pillow like the one which … only ignorance and disinterest can provide, but this is a scientific pillow. Pierre Delbet AS LONG AS CHANCE RULES,” Arthur Koestler has written, “God is an anachronism.”1 Koestler’s dictum is a sound conclusion … to a point. It is true that if chance rules, God cannot. We can go further than Koestler. It is not necessary for chance to rule in order to supplant God. Indeed chance requires little authority at all if it is to depose God;