> why humanoid? Glorified Roomba-like robots would do such job just fine. Steps. Garden gates. Uneven surfaces. Communal entrances. The real world is messy an

> why humanoid? Glorified Roomba-like robots would do such job just fine. Steps. Garden gates. Uneven surfaces. Communal entrances. The real world is messy and certainly not flat. Some sort of wheeled-legged-centaur type robot might work though.