Would you still use your car if you ended up in the wrong destination half the time?
Yes, because I can drive to the other end of the state in an afternoon. Then if I get lost, I can just course correct.
Would you use your car if you ended up in the right destination 100% - epsilon of the time? Yes, you would.
Or do you suppose this is the best AI will ever get?
Yes, because I can drive to the other end of the state in an afternoon. Then if I get lost, I can just course correct.