Many people miss that the rule is supposed to predict world-class expertise, the kind that wins Olympic events. Raising yourself into, say, the top 5-10% requi

Many people miss that the rule is supposed to predict world-class expertise, the kind that wins Olympic events. Raising yourself into, say, the top 5-10% requires an order of magnitude less effort. It's the difference between "The fastest possible version of this real-time algorithm" and "No longer doing it by hand."