Earlier quoted context omitted.
I got a little lost when you tried to compare musical harmony to societal harmony. With regards to musical harmony, is it possible that it's more or less random? I know multiple cultures have different definitions of musical harmony. I suspect the evolution of hearing also contains random elements. Similar to language, it's not so much about an inherent universality, just a universality we can all learn and agree on.…
The human ear has an intimate relationship with the octave 2:1 and its ratios, so its very hard to believe the convergence of appreciation globally to be random. More dramatically, visualizing the harmonious ratios on objects such as Chladni plates (a field called Cymatics) reveals that there is something deeper to consonance and harmony than meets the number line.
Ok I'll bite. What does it reveal? There's nothing inherently meaningful here. We know that 'dissonant' sounds (those that create interference patterns) create wavelets that are smaller and with less contrast than the more 'coherent' patterns from ratios that are closer to whole numbers.
But in what way is this meaningful or useful?