> You could just as well say “let’s divide the frequency range between x and 2x by 10 instead of 12”. Or we do something between x and 3x instead. We just don’t

> You could just as well say “let’s divide the frequency range between x and 2x by 10 instead of 12”. Or we do something between x and 3x instead. We just don’t. The reasons for this are much much more complicated than "we just don't", and include "we sometimes do". The history of tunings and the emergence and dominance of 12-TET is fascinating and rooted in both math and myth.