I have not written in some time about a theme that I think is an important one. Skeptics could probably argue that the reason I haven’t written about it was that the recent facts have contradicted my belief, though the fact is just that I haven’t gotten around to it. So, to put the cards back on the table, it is time to talk about valuation cycles. Many people can tell you that the average market P/E over the long term is something like 15 times. Of course, “average” doesn’t imply that the P/E is always 15. About half the time it is higher, and about half the time it is lower. The trick is figuring out in advance which half is which. In behavioral finance, some would argue that the market follows long-term trends in valuation. Rising valuations spark investor interest, and additional investors adding money to the market causes ...