Good, Because 10,000 Hours Is A Lot
The meme that 10,000 hours or practice makes you an expert has been so pervasive over the last few years that I have begun to develop a Pavlovian gag response anytime I hear it repeated. To me it always sounded too clean and too general to be true. 10,000 hours is three hours a day for ten years, so I don't doubt that after that much practice you probably would be an expert at something, but the idea that 10,000 hours is some magic number of proficiency rather than a large, semi-arbitrary round number with lots of zeros always perturbed me. Finally we're starting to see some analysis and push-back against that claim.