Not really robots – more like little static things that are moved around by a robotic-environment. The floor is the robot, not the little roboty things.
And they have something to do – unlike the ones yesterday. They’ve got proper little jobs. This is important.
Usually when robots have nothing to do, people pretend that they might be good for “search and rescue“. Because humans are always getting lost. No really, they are. Still… they wouldn’t get lost ANYWHERE NEAR AS MUCH as robots would if you just let them wander about the place.