I am not a very up-to-date kind of guy. Sometimes I stumble across some very old facts that I did not know about before (and that have nothing to do with investing). Like this one: The condor uses the least energy to move a kilometer of all species. So far so good. That sounds reasonable. The source being a study published by Scientific American in March 1973 (= good excuse for not having known about that fact as it was way before I started schooling). So, where on that list of various species does the crown of creation rank in terms of efficiency of locomotion? The human can be found at a rather unimpressive third of the way down the list. But then somebody at Scientific American had the insight to test the efficiency of locomotion for a man on a bicycle. And, a human on a bicycle blew the ......