POSITIVE PSYCHOLOGY
The greatest challenge is stating the problem in a way that will allow a solution.
Monday, August 6, 2012
Optical Illusion
Two perfect circles
Minnesotastan
at
TYWKIWDBI ("Tai-Wiki-Widbee")
With a hat tip to Alex Santoso, who found this excellent optical illusion on Twitter and posted it at Neatorama.
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