> People with high levels of education have very high mobility – but only for a short period after finishing their education. ... Migration is a young person’s

> People with high levels of education have very high mobility – but only for a short period after finishing their education. ... Migration is a young person’s game, and moving overwhelmingly occurs when people are starting their careers. > If millionaires were mostly college-going twentysomethings not yet tied to place by career or family responsibilities, place-based income tax systems would face serious challenges. The data does suggest that, to a degree, but it may be better explained by a combination of age plus education and careers rather than single-focused career-mindedness. It's just an anecdote, but in my experience 40-year-olds stay put because of their kids and homes, not because they couldn't find a career somewhere else. Someone a few years out of college with no kids can pack up their apartment into a few bags and try out something new on a whim. That gets more difficult with age and additional connections to an area.