traditional robots need to be smooth. I doubt commoditized robots will be based on traditional servos with traditional pid control, there is plenty of room for

traditional robots need to be smooth. I doubt commoditized robots will be based on traditional servos with traditional pid control, there is plenty of room for algorithm and control improvement, not too mention the huge strides being made in soft actuators. Like a post below you said, humans are able to do it, so its a question of how to cheaply artificially do that. Just because something doesn't exist yet, doesn't mean its impossible, that's the whole point of research. As an example, the group I was a part of in school made specialized control algorithms for 3D printers that can compensate for the flexibility and dynamics of cheap/thin actuators, which nearly doubled printing speed while retaining accuracy