The Friday Fillip
I had a conversation recently with a young person who was in a state of wonder and scepticism about evolution and natural selection: how could mammals have come about, what about eyeballs, etc.? Now don’t worry: I’m not about to step in front of anyone’s religious bus; we don’t go there on Slaw. No, it’s just that, as I explained to him, one source of our puzzlement is that we can’t easily imagine the effects wrought by small changes taking place an immensely large number of times. What’s a billion? to paraphrase someone whom I can’t recall at the moment. . . . [more]