What purpose is there in defining any term? It makes communication clearer and fosters mutual comprehensibility. Witness 'bokeh' lately. It has come to mean merely 'selective focus' whereas it really means the character of out-of-focus areas and is a property of a lens.
If
anything can be 'art', what's so special about 'art' then?
'Fine art' is not something abstract at all. In the narrow sense, it's something made by hand and intended to be looked at. Ever hear of 'decorative art'?
Do you know the difference between glass as art and glass as functional?
http://www.spencerart.ku.edu/~sma/images/chihuly.jpg
This is
made by hand, and
intended to be contemplated as something beautiful.
http://www.glassblower.info/images/chihuly-seaforms.jpg
Both parts have to be present to be 'art'.
This is not art:
http://earth911.com/wp-content/uploads/2008/10/green-glass-bottle.jpg
Why?
It's made by machine and intended only for functional use. But even if it were hand-made it would not qualify as art.
For something to be 'art', it must satisfy the following conditions.
It must be:
1) Made by hand, and
2) Intended to be contemplated as something beautiful.
We are talking of course about the plastic arts, not the performing arts.
A photograph fails to satisfy the
first condition (it's made by a lens), the hand-made wine bottle fails to satisfy the
second condition (it's not intended to be contemplated as something beautiful).
Now do you understand?