When objects are presented within the context of art (and until recently objects always have been used) they are as eligible for aesthetic consideration as are any objects in the world, and an aesthetic consideration of an object existing in the realm of art means that the object's existence or functioning in an art context is irrelevant to the aesthetic judgment.
Joseph KosuthAnything can be art. Art is the relations between relations, not the relations between objects.
Joseph KosuthThat celebrated marriage of science and art, photography, seemed at the time to join together how we look at the world, art, with how we were coming to know it, science.
Joseph Kosuth