Eye-Popping Optical Illusions

You won't believe your eyes--and you shouldn't! Every image in this follow-up to the popular Optical Illusion Magic is out to fool your perception with afterimages, visual "traps," and distorted views. Sometimes you'll have to shift the page to see the magic, as in "Slants on the Side" where parallel lines seem to come together at the bottom and spread apart at the top. In other "tricks," pattern and shape make all the difference, producing spirals where they don't really exist. And there are a few really funny signs: look at them carefully and see if you can spot the errors. Bet you can't!