Comment by imtringued

I don't know how you got this so wrong. In control theory you have to build a dynamical system of your plant (machine, factory, etc). If you have a humanoid robot, you not only need to model the robot itself, which is the easy part actually, you have to model everything the robot is interacting with.

Once you understand that, you realize that the human brain has an internal model of almost everything it is interacting with and replicating human level performance requires the entire human brain, not just isolated parts of it. The reason for this is that since we take our brains for granted, we use even the complicated and hard to replicate parts of the brain for tasks that appear seemingly trivial.

When I take out the trash, organic waste needs to be thrown into the trash bin without the plastic bag. I need to untie the trash bag, pinch it from the other side and then shake it until the bag is empty. You might say big deal, but when you have tea bags or potato peels inside, they get caught on the bag handles and get stuck. You now need to shake the bag in very particular ways to dislodge the waste. Doing this with a humanoid robot is basically impossible, because you would need to model every scrap of waste inside the plastic bag. The much smarter way is to make the situation robot friendly by having the robot carry the organic waste inside a portable plastic bin without handles.