IF A GREAT MUSICIAN PLAYS GREAT MUSIC BUT NO ONE HEARS . . . WAS HE REALLY ANY GOOD?
It's an old epistemological debate, older, actually, than the koan about the tree in the forest. Plato weighed in on it, and philosophers for two millennia afterward: What is beauty? Is it a measurable fact (Gottfried Leibniz), or merely an opinion (David Hume), or is it a little of each, colored by the immediate state of mind of the observer (Immanuel Kant)?
Good questions. Kinda leaning toward Kant.