We are trying to extrapolate the past experience of a small fraction of the world population that we have chosen to examine because they made a lot of money. Of course, if one looks at many different investment strategies and many different countries, one can find something that performed spectacularly in the past, even if there is no strategy that can be expected to do so well in the future.
最主要的问题是，在检验股票市场投资中，我们因为某种经济活动过去的一贯成功而选择它。我们试图从我们所选择检验的一小部分世界人口的经历做出推断，因为他们赚了很多钱。当然，如果一个人着眼于许多不同的投资方案和许多不同的国家，那他就能找到某种过去表现卓越不凡的东西，即使还没有什么战术能够保证它在将来表现依旧优越。