Indeed. Robots aren't intrinsically different from, say, combines. That doesn't mean that it isn't worth looking at disruptions caused by productivity growth, but I think we'd be better off looking at what kinds of disruptions were seen in the past. This not only gets us away from the robots narrative (which seems to muddle things a bit as it feeds into present day hype), but it also allows us to look at the impact of much higher productivity growth (current productivity growth is fairly low).