[previously in series: 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ] Paul Graham once said that every city sends a message. New York says you should make more money. Berkeley says you should live better. Boston says you should be smarter. People shouldn't decide on a permanent residence until they've lived in several cities and understand their differing psychological effects. San Francisco sends a…