I once marked an undergraduate dissertation arguing that music would be a suitable language for first contacting aliens, using only three pieces of evidence (each repeatedly): the poet T. E. Longfellow’s assertion that music is a universal language; the fact that the Beatles were banned in soviet-era Czechoslovakia; and Koko the painting gorilla (whose case, unbeknownst to the student, like all “talking” animals involved serious academic malpractice, including male handlers training Koko to sex…