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It is sometimes difficult to tell what subtle features change on upside-down faces. The phenomenon known as the "Thatcher Effect" was created by Peter Thompson, a psychology professor. It got it's name from the famed British Prime Minister Margaret Thatcher, who's image was often used to demonstrate the illusion. Freaky huh?
Contributed by Alyssa Green
This video is different from a lot of videos about illusions, because it shows you the trick first. You would think that would take the fun out of the trick, but it is amazing how your mind still reacts the same way even though you already who what is really going on.
Contributed by Kandi Smith