It is both amazing and sad to see China is literally in the future compared to the US in terms of infrastructure and social development. A trip to one of the major cities in China made it clear to me that they are ahead of the world right now. The amount of tech and the level of integration are unbelievable. In comparasion, the streets of SF, one of the crown jewels of the US technosphere, are just so "normal" I find…
I also notice you're mentioning SF without mentioning that this city - like so many others - has been driven into the ground by decades of mismanagement by so-called "democrats". California is on a road to nowhere while building high-speed trains to nowhere, the streets in SF only get cleaned up when the leader of the Chinese Communist party comes to visit, the place is a dump and people are leaving it in droves. It wasn't when I was there for the first time in 1979 - people on roller skates, some left-over hippies, disco really made it - but the last time I visited - 2003, for the IETF conference - the signs were already clearly visible and I was warned that the hostel I stayed in in the Tenderloin district was 'not in a safe area' and that I should not walk around the city (which I did anyway, I'm stubborn).
California should kick the "democrats" to the curb for a while, try to repair the damage they did to the place and its reputation and maybe, just maybe the "Golden State" can once again become the place of dreams it once used to be. This is not so much an endorsement of Republicans but simply a statement of fact, a single-party system nearly always leads to decline. To slightly paraphrase MC5: Kick Out The Dems! [1]