This book presents an understanding of judgment and decision making shaped by psychological discoveries. It discusses the limitations of our mind, such as excessive confidence and inability to acknowledge ignorance. It also looks at the effects of cognitive load, emotion, and intuition on decision making. It examines the connection between thinking and self-control, and how intelligence is not only the ability to reason, but also the ability to find relevant material in memory. Finally, it looks at how familiarity can lead to false beliefs and how mood affects our intuition.