In Champions of Illusion, Profs. Susana Martinez-Conde and Stephen Macknik present a smorgasbord of mystifying images, many selected from their Best Illusion of the Year Contest. Whether it’s false motion, tricks of perspective, or shifting colors, Champions of Illusion is packed with adventures in visual perception. If you have ever found yourself face-to-face with an utterly bewildering illusion, you know the powerful effect such images have on the mind. The question we often ask ourselves is, How is that possible? Martinez-Conde and Macknik, who study the intersection of neuroscience, illusions, and stage magic, explain just why we think we see the things we see.