Steven Pinker and the decline in violence

I have a long piece in today’s Observer about Steven Pinker’s new book which includes the transcript of an email exchange he and I had about it.

Steven Pinker is one of those wunderkinder that elite US universities seem to specialise in producing. Born in Canada in 1954, he’s currently a professor of psychology at Harvard, but ever since he arrived in Cambridge, Massachusetts in 1976 he’s been bouncing like a high-IQ tennis ball between Harvard and its prestigious neighbour, MIT (he has professorial chairs at both institutions). By profession he’s an experimental psychologist who began doing research on visual cognition but eventually moved into studying language, especially language acquisition in children. He probably knows more about mankind’s use of verbs, and particularly the distinction between irregular and regular ones, than any other man, living or dead…