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Previous optical Illusion of the Month (October-November 2009)

by Gianni A. Sarcone and Marie-Jo Waeber


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'What's wrong with this picture' challenge

Pointing fingers
On your opinion, which forefinger points EXACTLY to the middle of the shape’s height: A or B? Please, explain what influenced your choice!

pointing fingers

Strangely enough, 80% of people is convinced that both fingers point at the same level (although the one on the right appears to be lower). Actually, only finger B points to middle of the shape's height, as demonstrated in the figure below.

monthly optical illusion solution

You're encouraged to expand and/or improve this article. Send your comments, feedback or suggestions to Gianni A. Sarcone. Thanks!
You can use the image(s) above in your non-commercial web page for free as long as you leave the copyright and author's info intact and link to us.

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