The illusion of "The Wall Cafe"

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Carefully look into the picture. At first glance it seems that all the lines are curved, but in reality, they are parallel. This optical effect was discovered by Richard Gregory in the Wall cafe in Bristol, where it got its name.

 

5 QUICK FACTS

  1. It is impossible to lick your elbow.

  2. All polar bears are left handed.

  3. People say bless you when you sneeze, because your heart stops for a millisecond.

  4. Each king in a deck of playing cards represents a King from history:

    Spades - King David

    Clubs - Alexander the Great

    Hearts - Charlemagne

    Diamonds - Julius Caesar

  5. Two out of three people will attempt to lick their elbow after reading number one :)

 

MISTAKE?

 
 
 

ANSWER: Click on the image to reveal the mistake.