Every now and then, more often than you might expect, I mention something in lecture (usually in a classroom in front of students) and a small number of individuals express incredulity that the thing exists. Pygmies are one of those terms that garners disbelief. Many people assume they are made up. At the same time, a disconcerting number of times the opposite happens. Mermaids, aliens, dragons, Atlantis, etc. are not real but many students, educated by the History and Discovery channels, apparently, (I don't watch them but I hear things), think they are.
Strangely, one of the things…