[athroway]

That's the case for many abstract notions no one seems to agree on. Art, culture, nation, justice... No one really agrees on what they're supposed to be, only on single instances. Doesn't make the more encompassing abstraction any less real or useful.

[thejohnconway]

No, I don't think that's it. Art, justice, etc, have constituent parts. People disagree, but there's lots of stuff in those boxes. When I turn my minds eye to free will, there's nothing there.

[iamnothere]

> Art, culture, nation, justice...

Hence why there can be no true hard science based around these areas, and indeed no agreed-upon "truth".