[EGreg]

How to simulate human humor responses? Then we can evolve AIs that are funnier and more resourceful than anyone on the planet.

How to simulate human connection, attraction and arousal responses? Then we could have bots that are smoother talking and far more preferable to human lovers.

How to simulate human responses to nutrition? Then we could have individualized recommendations for diets, achieving goals like holistic health or muscle definition and addressing issues like diabetes.

[ksubedi]

These are all complex systems where figuring out how to simulate them is a much difficult task than even reinventing reinforcement learning from scratch.