So I've been working on the history of income and wealth distribution for the past 15 years, and one of the interesting lessons coming from this historical evidence is indeed that, in the long run, there is a tendency for the rate of return of capital to exceed the economy's growth rate, and this tends to lead to high concentration of wealth.
过去15年来，我一直致力于研究 收入和财富分配的历史， 从所看到的史料中 我分析得出的一个有意思的现象是 从长远来看 趋势是 资本的收益率超过经济增长率， 这将会导致财富的高度集中。