Just to undermine your confidence in the certainty of your perception here is a neat optical illusion that I found on GizmoWatch.com
Supposedly if you see the dancer spinning counterclockwise, then you are left brained (logical). If you see her spinning clockwise then you are right brained (creative). If you see her spinning both directions I can only assume it means that you are either nuts are quickly heading in that direction.
Note: As a law student, I fittingly saw it spinning counterclockwise at first and then examined it from every possible angle, abusing my brain until I was able to see it spin clockwise as well. After much effort, I can say it really is possible to see it both ways, but find it disconcerting for some reason. I have to look away for it to change directions though, my mind can't handle the change looking directly at it. I'm a little skeptical that the image isn't really just changing directions though.
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