Every now and then, someone comes up with a question or problem so divisive that it starts an online debate that rages for days, or even weeks. Some even last centuries like the "is it a duck or a rabbit" image. Here are five puzzles that teach us a lot about how our brains work and how we interpret the world.
Tagged With perception
There you are, clicking through your friend's Facebook album, when suddenly you happen upon a picture of yourself -- or rather, a slightly less attractive version of yourself. The "real" you appears to have been abducted, replaced with some second-rate knock off. What gives? you ask yourself. Is that really what I look like?