Computers can be trained to eat in VR. Just give the RL algorithm a positive reward when the virtual cookie touches the virtual mouth, and then delete it. Once the agent has learned to hunt for cookies, make the task more difficult, for example enclosing the cookie in a transparent box and giving the agent a tool to open it. And if you add other agents and hunger, so that the agent saves up food for later instead of eating as much as he can, they will begin to act socially and hide, steal, and trade food.