Google has deployed a fleet of 23 reinforcement learning enabled robots over two years to do this task of sorting waste and recycling. And these robots roamed around the offices, found these waste stations and had to recognize their objects and correctly move them around. This is yet another example where we don't know very much and we are discovering a lot very quickly. But yeah, it's another really interesting kind of problem class that's arising as people start to play with these things at scale.