Here is an interesting book review by Simon Blackburn of Alan Sokal’s latest book. Some years ago, Sokal, a physicist, submitted an essay on “the hermeneutics of quantum gravity” to a postmodernist journal and the essay was published. Then Sokal revealed that he made the whole thing up just by pasting together obscure phrases in vogue by postmodernists at the time. Har, har; everyone laughed at those silly postmodernists. But what is the moral of the story?