When is contemporary art contemporary art?

I've heard it said that any ant made now must be contemporary art. I suppose at a time when anything seems to be art, that could be a sensible statement. But it's also an easy way out.

What makes contemporary art contemporary is not that it's made now, but that it could only be made now. It tells us what it means to be human now. It uses materials and approaches that come out of now. It flings art history forward into the relevant now. It makes us confront who and what we are now.