That's pretty cool. A natural step further is to automatically rebuff the dirty areas, but they probably couldn't go there due to their union having objections

That's pretty cool. A natural step further is to automatically rebuff the dirty areas, but they probably couldn't go there due to their union having objections to it. I have heard things as silly as employees being prohibited from doing office moves (within the same building) because it was in a union contract that a union employee must be given the job.