Crouch on top of the chair seat (point A), and get a friend to pose near the chair legs (point B). Send another friend to look through the viewer (point C). To the friend at point C, you will appear shrunken in size!

The giant chair illusion looks like carpentry gone wrong until you observe the set-up from the right angle. Although we know that the chair seat is placed at a distance behind the chair legs, when observed through a precise viewpoint, the seat and legs visually fuse together to create what appears to be normal-sized chair. As a result, the observer perceives the chair seat to be much closer than it actually is. Consequently, anyone posing on the chair seat appears to be much smaller. This clever trick illustrates how our visual system relies on shortcuts and sometimes glosses over details in favour of the big picture … even when the picture makes no sense at all.

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