The people who move in and out aren't just shuffling seats. They may be moving in because of their increased ability to exercise that position in society. The c

The people who move in and out aren't just shuffling seats. They may be moving in because of their increased ability to exercise that position in society. The consequence may be a center of regional productivity and true national gain. In other words, you don't get a Bay Area unless a lot of tech and business types mingle together.