Maybe you like your Airbnb to come with a nice big living room, or lots of light, or his-and-her sinks. If you\u2019re a robot, though, you just want a little variety. A carpet here, a hardwood floor there. Because you\u2019re a pioneer, not just a tourist. At least, if you\u2019re a very special robot from a team at Carnegie Mellon University.