. . . "Some years ago, Marty Leibowitz and Anthony Bova pointed out a ???hill??? in valuation multiples.1 When real interest rates???which we define as 10-year Treasury bond yields less the trailing three-year average Consumer Price Index???are midrange, suggesting solid economic growth, the stock market sports a robust P/E ratio, often well above 20 times earnings.2 When real interest rates are either n" .