Malcolm Gladwell’s book Outliers explores what he calls the 10,000 rule. The basic idea behind the concept is that it takes 10,000 hours before you can be an expert on anything. Mike Krzyzewski passed that threshold years and years ago, but his decision to remain the coach of the United States Basketball team through the 2016 Olympics gives him more opportunity to work with the highest-quality athletes in the sport and thus makes him an even better coach.