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Is your brain a liar? If you consider how easily we process magic tricks and other optical illusions, then it seems so. Beyond the birthday party magician, magic is everywhere—in nature and even as a part of job training. Turns out, optical illusions serve a purpose other than simply entertainment. But if magicians, mentalists, and tricksters make us question our reality, what good does it do? In this video, we talk about the history of illusions, its everyday uses, and how it affects our brain. The results may surprise you! Stay tuned, Brainiacs.