WTF

[Sephrana]

actually the graphic never changes. it depends on how you personally see it.

http://en.wikipedia.org/wiki/The_Spinning_Dancer

If the foot touching the ground is perceived to be the left foot, the dancer appears to be spinning clockwise (if seen from above); if it is taken to be the right foot, then she appears to be spinning counterclockwise.

The illusion has been incorrectly[3] identified as a scientific personality test that supposedly reveals which hemisphere of the brain is dominant in the observer. Under this unproven interpretation, it has been popularly called the Right Brain–Left Brain test,[4] and was widely circulated on the Internet during late 2008 to early 2009.[citation needed] During this time it was established that the silhouette is more often seen rotating clockwise than counter-clockwise. According to an online survey of over 1600 participants, approximately two thirds of observers initially perceived the silhouette to be rotating clockwise. In addition, observers who initially perceived a clockwise rotation had more difficulty experiencing the alternative.[5]