But that’s not the question (or rather, it is only because of convention). In any given subfield of music, it is just as well possible to be objectively right or wrong – a wrong note is a wrong note, no two ways about it. Yet music is not exhausted by just considering any of its subfields, and consequently is not taught that way. Similarly, maths is not exhausted by doing arithmetic*, but is taught as if there were god-given rules to adhere to. But mathematics only becomes interesting when you start to work with, rather than within, the rules – when you invent new ones, bend, perhaps even break, existing ones, in short, be creative. That creativity is expressly forbidden in maths class.
The rules of today are only there because somebody, at some point, invented them, made them up – and they are still around because other people thought them interesting.
Anyway, this is probably not the place for a debate (uh, though I just now notice that we have in fact moved to ‘Great Debates’, which rather undercuts the point I was going to make about the rules that have been made up for this particular forum prohibiting debate – but also strengthens my point that interesting things only happen if occasionally you change the rules to work with), perhaps you’d enjoy reading Lockhart’s essay…
*Let’s not talk about Gödel numberings right now…