What stood out to me is that the speed of the movements makes it clear the autonomous balance control just isn't there. You can simulate this: try to move your

What stood out to me is that the speed of the movements makes it clear the autonomous balance control just isn't there. You can simulate this: try to move your upper body while standing up without changing the balance or stance of your legs and hips - unless you move slowly you can't do it, whereas if you put any force or momentum behind it you'll feel yourself straining pretty hard to stay upright. When you see the bits and pieces of behind the scenes for Boston Dynamics it's clear that's where a lot of the magic actually is (and also if you look at how say, Atlas moves) - by necessity it looks much more "natural" because to get any power or speed behind the motions the whole robot needs to actively compensate the movements (obviously having enough power behind the drive system to actually do it is also critical).