With his book “Thinking, Fast and Slow,” Daniel Kahneman emerged as one of the most intriguing voices on the complexity of human thought and behavior. He is a psychologist who won the Nobel Prize in economics, for helping to create the field of behavioral economics. He is a self-described “constant worrier.” And it’s fun, helpful, and more than a little unnerving to apply his insights into why we think and act the way we do in this moment of social and political tumult. This interview is edited and produced with music and other features in the On Being episode “Daniel Kahneman — Why We Contradict Ourselves and Confound Each Other.” Find more at onbeing.org.