Bruce Tognazzini – Mac & the iPad, History Repeats Itself:

"Steve assembles and motivates a small team of young geniuses, then sets them to work for “90 hours a week and loving it.” The results are highly-integrated designs that far outpace the competition.

It is this small-team approach that, of necessity, results in important capabilities being left out of the first release. The payoff, though, is that Steve ends up with a central core of perfectly-integrated functionality instead of a rambling labyrinth of disjointed “features.” This design framework is so well conceived that it can be built upon for years, even decades, without being stripped out and restarted."