It is those who are successful, in other words, who are most likely to be given the kinds of special opportunities that lead to further success. It’s the rich who get the biggest tax breaks. It’s the best students who get the best teaching and most attention. And it’s the biggest nine- and ten-year-olds who get the most coaching and practice. Success is the result of what sociologists like to call “accumulative advantage.” The professional hockey player starts out a little bit better than his peers. And that little difference leads to an opportunity that makes that difference a big bigger, and that edge in turn leads to another opportunity, which makes the initially small difference bigger still–and on and on until the hockey player is a genius outlier. But he didn’t start out an outlier. He started out just a little bit better.
~ Malcolm Gladwell, Outliers: The Story of Success