[jammygit]

Erickssons original number was more like 10 years of daily deliberate practice increasing drom 0.5 to a max of 4/hours per day iirc for experienced people. It was roughly observational based on violinists and pianists. The original paper was interesting.

[paulcole]

Yeah I think it was Gladwell (shocker) who shoehorned himself into the concept and made up the 10,000 hour rule.