How does Steven Pinker use imagery in The Language Instinct?

Steven Pinker is a linguist, author, cognitive scientist, and experimental psychologist. At the time the book was published, Pinker worked as a professor in the Department of Brain and Cognitive Sciences and was the director of the Center for Cognitive Neuroscience at the Massachusetts Institute of Technology in Cambridge, Massachusetts. Currently, Pinker is a professor at Harvard College and works as the Johnstone Family Professor at Harvard's Department of Psychology.