The most interesting observation to me: “It’s harder, relatively speaking, to move from the top 10% (1.8 millions)into the top 1% (10 millions)than it is to move from the top 1% into the top 0.1%(40 millions).”
And So on.
按美國人口基數, 千裏挑一,依然會是人多如麻,算不得啥