The French have a saying, 'the one who is absent is always wrong'. This has inspired a number of similar aphorisms - including the one that provides the text for our story - 'the one who survives, is always guilty'. Lester Keyworth is an agronomist. He sincerely believes that he knows more about scientific farming that anyone else in the world - and he may even be right! Right now, he's being driven home from a lecture by his wife.