Old article, but backing up (and preceding) the Gladwell book (well, the 10,000 hours part anyway). And it makes a couple of key additional points:
First, the 10,000 hours have to be on what has been called "deliberate practice." As an example, in golf:
"Simply hitting
a bucket of balls is not deliberate practice, which is why most golfers
don't get better. Hitting an eight-iron 300 times with a goal of
leaving the ball within 20 feet of the pin 80 percent of the time,
continually observing results and making appropriate adjustments, and
doing that for hours every day - that's deliberate practice.
Second, consistency is crucial.
"Elite performers in many diverse
domains have been found to practice, on the average, roughly the same
amount every day, including weekends."
