It can generate a bunch of stuff automatically. What we need is the ability to test that stuff automatically, so we can close the generate-and-test loop. If we

It can generate a bunch of stuff automatically. What we need is the ability to test that stuff automatically, so we can close the generate-and-test loop. If we can test automatically, we can then have this thing hillclimb to usefulness. I mean "test" in the sense of "evaluate whether the output is good."