Graffiti and the Art Test
If you're in the tech industry, or you're just generally interested in technology, chances are you've heard of the Turing test. It's usually billed as a litmus test for intelligence in machines. The idea, in its most basic form, is simple. A judge converses with two subjects, one of which is human and one of which is a machine, via some sort of mechanism that hides the physical characteristics of the subjects. If the judge cannot tell the human from the machine, we say that the machine is intelligent. Simple as that.