I was actually thinking about this recently - not directly with nwn in mind.
On the news here in the UK, there was a dispute on the news regarding who owns the rights to a photo selfie taken by a Monkey.
Legally - Photography is considered an Art
Photographers are considered Artists
Someone was claiming that the photo belongs to him, because it was his camera.
I do not know how the issue was eventually resolved or if it is in dispute still
But my interpretation of Art is that Art belongs to the Artists unless a release is signed to transfer rights.
If a monkey makes a photo - it obviously wont belong to him, therefore the photo as property may be considered the camera owners, but the creative rights of the photo are not necessarily transferred with ownership of that single photo instance.
Art is basically anything that you can be creative with. It can really be anything -
I've heard people refer to coding / programming as an Art-Form.
Its highly logical, but some people do excel at it and implement code in ways that are creative and artistic.
NWN Being a highly mod-able game is a form of art. I think it may actually legally be considered a 'creative art' - if you were to get into the legalities of it.
Mod-able games are kinda like those paintings that we all do in school when we are kids - where we get a dollop of paint, and use a straw and blow to make a random spider/tree-like image.
Everyone is working on something individual, but when you stand back and look at it - yes, it can look like a mess, but it can also look very impressive and artistic