For those who don’t know already, the “10,000 hours” to attain expert-level mastery in any field or endeavor is false. The study that Malcolm Gladwell cites by Anders Ericsson only applied to violin performance, which is a narrow field that has measurable and quantifiable performance levels and hundreds of years of teaching history.

I repeat this comment almost every time because 10k is both discouraging for the beginner and sometimes falsely encouraging for the “expert” who may have put in a lot of hours but in reality has been repeating mistakes and not really improving.