Yes but to get to that point, Herbert needs to know the physics of the world, cause the mail may be under the kid's football which would drop on the floor of the mail is pulled and bounce around and break some things. And the robots also needs to know about making the right decision: is it better to let the ball break the China vase than making a move that would hit the dog in the face even not very hard?

In order to get there, you need a robot that knows a lot of stuff.