3 Laws of Robotics (Vacuum Subclause)
1. A robot vacuum may not injure a piece of furniture or, through inaction, allow a sofa to come to stain.
2.A robot vacuum must obey the orders given it by human beings except where such orders would conflict with the First Law, i.e., don't fill it with cranberry juice and ask it to do doughnuts on your settee.
3. A robot vacuum must protect its own existence, such as not committing suicide by drinking a bowl of cat water, as long as such protection does not conflict with the First or Second Laws.