The Greater Fool Theory

In case you weren't aware of the Greater Fool Theory of investing, it goes something like this: As big a fool as you might have been to buy something that is over-priced, over-bought, and purchased as you jumped on that train, not realizing that the end of the line is only one stop away, there surely is a bigger fool that will buy it from you.
In the case of this recent 9 week, unabated run of the S&P, this chart says it all - if you are buying here, then you are, in fact, that Greater Fool.