Even a topic as innocuous as left-handedness turns out to be booby-trapped. In 1991 the psychologists Stanley Coren and Diane Halpern published statistics in a medical journal showing that lefties on average had more prenatal and perinatal complications, are victims of more accidents, and die younger than righties. They were soon showered with abuse—including the threat of a lawsuit, numerous death threats, and a ban on the topic in a scholarly journal—from enraged lefthanders and their advocates.2
