I repeat that Professor Pigou has altogether omitted from his analysis the unstable factor, namely fluctuations in the scale of investment, which is most often at the bottom of the phenomenon of fluctuations in employment.

我再说一遍，庇古教授在他的分析中完全忽略了不稳定因素，即投资规模的波动，而这往往是就业波动现象的根源。