alt Hacker NewsTotally, and they ask why not wheels...
I think the key is that none of our actual home use cases can be done with just arms. You don't need your folded clothes sitting in front of your washer and dryer, and a set of arms can't handle folding sheets.
Why not? I would love to have a set of arms that could flip the laundry from the washer to the dryer and then take it out of the dryer and fold it and put it in the basket.