Why do you say cheating? Most (all? I'm not an expert) AIs are "seeded" on datasets which are generated by humans. For example, Google translate uses documents translated by experts to convert say, French into German. They use translated government documents, amongst other sources, to get this, instead of some impossible-to-program decision tree that contains every possible grammar rule.

Both real-world training and artificial data have their own benefits. For example, you can use artificial data to simulate conditions that are rare in the real world, or would be very hazardous to try and test (for example, how does the car react when it thinks another car is about to t-bone it).