I'm sure it's not optimal. But it's worked for Facebook very well so far. Why would they change? They don't need every talented developer under the sun. They ju

I'm sure it's not optimal. But it's worked for Facebook very well so far. Why would they change? They don't need every talented developer under the sun. They just need a large group of developers who can do the work, and a small group of developers who can push the envelope on the most cutting edge stuff.