Art and Context

I think that art can be different things.

You can see a painting or a sculpture and have an immediate emotional and/or intellectual response to it and you label it as art.

However, with more 'modern' art, if we saw it in the street, then we wouldn't perhaps consider it as art, but it can still be classified as such because context can give meaning to an otherwise everyday object. Hence, when people deride modern art as having no artistic value by citing examples in which people have mistaken water fountains or some other such thing in a museum as a piece of art (thus suggesting that people cannot tell the difference), they are wrong because the water fountain is not art....Wait maybe it is....What if the fountain was particularly beautiful? Then, one might say that it is a piece of art?...Are it's all subjective and vague!!