…”But my take from these observations is that this 40-year period of time has been quite remarkable – a grey if not black swan event that cannot be repeated. With interest rates near zero and now negative in many developed economies, near double digit annual returns for stocks and 7%+ for bonds approach a 5 or 6 Sigma event, as nerdish market technocrats might describe it. You have a better chance of observing another era like the previous 40-year one on the planet Mars than you do here on good old Earth. The “top dollar rooms in the financial market’s grand hotel” may still be occupied by attractive relative asset classes, but the room rate is extremely high and the view from the penthouse is shrouded in fog, which is my meteorological metaphor for high risk.

rate of return of a dynamic “constant maturity strategy” maintaining a fixed duration on a Barclays Capital U.S. Aggregate portfolio now yielding 2.17%, will almost assuredly return between 1.5% and 2.9% over the next 10 years, even if yields double or drop to 0% at period’s end. The bond market’s 7.5% 40-year historical return is just that – history. In order to duplicate that number, yields would have to drop to -17%! Tickets to Mars, anyone?”