Aim (as of a slingshot or rifle) is perception of symmetry.
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Replying to @preinfarction
@preinfarction my thought is somewhere between this http://www.ncbi.nlm.nih.gov/pubmed/10878271 andpic.twitter.com/r5sASaoRUf
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Replying to @sarahdoingthing
@preinfarction so the perception of symmetry is not just lining the guy up between the sights but lining up each side's monocular regions2 replies 0 retweets 1 like -
Replying to @sarahdoingthing
@sarahdoingthing Are you shooting me in the face in that drawing?1 reply 0 retweets 1 like
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