But investors should be wary of this argument. It may sound plausible, but it is hardly conclusive, and, more importantly, it certainly does not tell us that high prices are sustainable.
一种对高资产价格耳熟能详的辩护认为实际的（计入通胀因素的）长期利率是非常低的。但投资者们应该对这种观点保持警惕。它看似有理，但却并不是结论性的，更重要的是，它的确没有告诉我们这种高价格是可持续的。