Right brain v. Left brain test - spinning dancer

[tpir]

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AFAICT what you see depends on where your visual system places the light source.

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This is a better way of putting it. Try to picture the shadow like it was a reflection and you were lookin at the dancer through a pane of glass from underneath or something. It took my coworkers like 5 minutes to understand how they could see it both ways.

lol @ the some of the reasoning offered up in this thread. At least no one suggested looking at it during odd or even numbered minutes.