This Optical Illusion Will Give You a Headache For the Next Two Hours [Watch This]

These are four perfectly round, concentric circles. Wait no, they aren't. Oh yes, they are. No, they are not. Are they? No. Yes. Would you please stop moving right now? Stupid circles made of stupid squares. [Thanks Karl!] More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/zNO_yF5pdzo/this-optical-illusion-will-give-you-a-headache-for-the-next-two-hours

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