Love him or hate him, many of our readers may know enough about Daniel C. Dennett to have formed some opinion of his work. While Dennett can be a soft-spoken, jovial presence, he doesn’t suffer fuzzy thinking or banal platitudes— what he calls “deepities”—lightly. Whether he’s explaining (or explaining away) consciousness, religion, or free will, Dennett’s materialist philosophy leaves little-to-no room for mystical speculation or sentimentalism. So it should come as no surprise that his latest book, Intuition Pumps And Other Tools for Thinking, is a hard-headed how-to for cutting through common cognitive biases and logical fallacies.