Human intelligence is a superweapon: an amazing capacity that has single-handedly put humans in a dominant position on Earth. When human intelligence defeats itself and goes off the rails, the fallout therefore tends to be a uniquely big deal. In How to Actually Change Your Mind, decision theorist Eliezer Yudkowsky asks how we can better identify and sort out our biases, integrate new evidence, and achieve lucidity in our daily lives. Because it really seems as though we should be able to do better--and a three-pound all-purpose superweapon is a terrible thing to waste.