1.5 spinpic.twitter.com/lYkHVQGVpg
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let's be clear, this is the best i'm likely to throw this session (about a half hour or so)
Seems like a fragile skill 
it's high variance -- reducing the variance *is* the skill but one's chances of achieving fantastic results like this semi-regularly do depend on (and therefore indicate) how much precision one has acquired
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