Cities are fractal. You can always go a layer deeper and there’s just as much complexity. Following this principle, I sometimes think it might make sense to just stay in San Francisco my whole life and explore the infinite levels of that fractal. It’s cheaper than interstate or international travel anyway, and according to this framework you get the same amount of interestingness no matter how many levels deep you go. The catch is that when you stay in one place it's too easy to accidenta...