User:Ornithikos

Explain xkcd: It's 'cause you're dumb.
Revision as of 04:48, 6 December 2012 by Ornithikos (talk | contribs) (Created page with "==Checkershadow illusion== File:Checkershadow.png See [http://persci.mit.edu/gallery/checkershadow Adelson's source page].")
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Checkershadow illusion

File:Checkershadow.png

See Adelson's source page.

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