Was there ever a golden age of the family? Political debates about the family often invoke a norm of family life in which marriages lasted and children thrived. But a new report suggests that pre-marital sex, cohabitation, single parenthood and illegitimacy have been rife for two centuries. It's the post war period from 1945-1970 which is unusual for its high rates of enduring marriages. Many people in the past didn't ever marry because of the problems in obtaining or affording a divorce. The historian Professor Pat Thane discusses families, real and ideal, with Laurie Taylor. Also, are most scientific claims little more than delusions? The Professor of Information Systems, Ian Angell talks about his co-authored book 'Science's First Mistake' which critiques science's claims to 'truth'.