http://www.newyorker.com/online/blogs/sportingscene/2013/08/psychology-ten-thousand-hour-rule-complexity.html?utm_source=%22Barking+Up+The+Wrong+Tree%22+Weekly+Newsletter&utm_campaign=d446dafae6-crazy8_248_24_2013&utm_medium=email&utm_term=0_78d4c08a64-d446dafae6-56341561
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