Taleb on investment strategies and time horizons

Taleb points out that investment strategies can appear to work for a long time, but eventually fail. He also says that whatever works cannot be stupid.

There is no time horizon after which we can say that a strategy has worked. However, we can say for certain if a strategy has failed, and you lose all your money. A species can survive for a million years -- it appears to be successful -- then it goes extinct.