Pick an icon, any icon
February 9, 2012 5:05 AM Subscribe
The Laberinto of Andrea Ghisi is a 17th-century magic trick in book form. Pick an image from the 60 arrayed in front of you, and tell the magician only which quadrant it appears in. Repeat the process twice on different pages, and he can tell you what image you chose. You can see the trick performed at around 2:20 in this video, play a simulation, or see the book digitized in its entirety.
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