Optical Illusions Author:gyles brandreth, michael dispezio, katherine joyce, keith kay and charles paraquin Is seeing really believing? These astounding optical illusions will have you wondering what's real and what's not. They are baffling challenges that are sure to test your visual thinking skills in the most enjoyably twisted way. Don't let looks deceive you as you try to figure out which objects are longer, taller, or a greater distance apart;... more » whether you see rows of triangles or rows of squares; and more. You'll never see the world around yo in quite the same way after you tackle the ingenious illusions you find here.« less