Illusion

A wild illusion. The spinning silhouette mostly starts up clockwise for me.

Update (10/14/07): Lots of comments over here at Marginal Revolution. There is a reference to left brain versus right brain dominance, etc., but I'm not too sure ... I like the comment about the person that tried filming it backwards ... then when played backwards, the person still saw things going in the same direction.  :)

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