There is a popular theory that it takes at least 10,000 hours of focused practice for a human to become expert in any field. In Japan, there are craftspeople who go far beyond this to reach a special kind of mastery. These people are called Takumi and they devote 60,000 hours to their craft. That's 8 hours a day, 240 days a year, for over 30 years. It's an almost... see more