ANDY KESSLER: The Pension Rate-of-Return Fantasy: Counting on 7.5% when Treasury bonds are paying 1.74%? That’s going to cost taxpayers billions. “The right number is probably 3%. Fixed income has negative real rates right now and will be a drag on returns. The math is not this easy, but in general, the expected return for equities is the inflation rate plus productivity improvements plus the expansion of the price/earnings multiple. For the past 30 years, an 8.5% expected return was reasonable, given +3%-4% inflation, +2% productivity, and +3% multiple expansion as interest rates plummeted. But in our new environment, inflation is +2%, productivity is +2% and given that interest rates are zero, multiple expansion should be, and I’m being generous, -1%.”