“Can Sopranos Be Understood—Are high-voiced good singers necessarily hard to understand?”, in the special Music issue of the Annals of Improbable Research, gathers research about that high-pitched question. Read the article free (PDF). Then, if you dare, purchase the issue, or subscribe to the magazine.
“It is difficult to get a man to understand something, when his salary depends upon his not understanding it!” — Upton Sinclair, 1935. “As someone once remarked, it is very difficult to get a man to understand something when his tribal identity depends on his not understanding it.” —Michael Bérubé, 2011.