We may have to rethink the assumption that Silicon Valley is the hotbed of innovation in which all the world's best and brightest want to work and live. TechCrunch has a piece by an invited expert on the reverse brain drain already evident and growing in the US as Indian, Chinese, and European students and workers in the US plan to return home, or already have. From an extensive interview with Chinese and Indian workers who had already left: "We learned that these workers returned in their prime: the average age of the Indian returnees was 30 and the Chinese was 33. They were really well educated: 51% of the Chinese held masters degrees and 41% had PhDs. Among Indians, 66% held a masters and 12% had PhDs. These degrees were mostly in management, technology, and science. ... What propelled them to return home? Some 84% of the Chinese and 69% of the Indians cited professional opportunities. And while they make less money in absolute terms at home, most said their salaries brought a 'better quality of life' than what they had in the US. ... A return ticket home also put their career on steroids. About 10% of the Indians polled had held senior management jobs in the US. That number rose to 44% after they returned home. Among the Chinese, the number rose from 9% in the US to 36% in China."