…to this book, which is mildly interesting and gently astride our subject matter. It's called Time's Arrow, Time's Cycle by Stephen Jay Gould, who as you all know is a major biological essayist and it's interesting it discusses the impact on the western…

…right. The incubator was set to just the right temperature when the gases were at just the right concentrations and so on and Stephen Gould has pointed out that we couldn't even play the tape over again if you started off with life at one of the early…