Little Giant® Book: Visual Tricks – Optical Illusions & Mind-Bending Puzzles for Kids & Adults | Fun Brain Teasers for Family Game Night, Classroom Activities & Party Entertainment

It's so weird that they would sell a book of visual tricks that is filled with lies. For example, #75 is a circle with arcs drawn in and a spot. It asks, "Is the spot in the center of the circle?" The answer page says it is in the center but the arcs make it look like it isn't but if you measure it, it is not even close to the center. This is one of many errors I've found. In other words, they fake the illusion and think people are dumb enough not to notice.