Standing at the window of an office in the Texas Medical Center (TMC), I was struck by two things. First, how big and diverse the TMC is. Ten years ago there were 42 institutions included in the TMC. Today, there are 54 located on 1345 acres. On any weekday, the population of that medical center is greater than a large portion of the towns and communities in this nation, over 125,000 with 106,000 employees.