Forget the 10,000-Hour Rule: The Truth About Mastering a Complex Topic For years, the "10,000-hour rule," popularized by Malcolm Gladwell in his book Outliers, has stood as a beacon of dedication. The idea is simple: to achieve true mastery in any complex field—from playing the violin to becoming a chess grandmaster—you need to put in roughly 10,000 hours of deliberate practice. It's a compelling concept, offering a clear, if daunting, path to...