This is absolutely creeping me out:
I had no idea robotics had advanced to the point where a machine could do something like this. This thing - Big Dog, it's called - is amazing. It's easy to make a four-legged machine that just plods along in the direction you point it. There are plenty of toys that do that, so long as they don't bump into anything. But to navigate over a pile of bricks? Recover from being kicked? Get up after slipping on ice? That's uncanny.
What's unsettling is that the production models this may lead to will be, basically, delivery devices. But what will be delivered, and to where? In our military we already use drone aircraft, not just to spy but to attack targets. What might be done with drone ground troops? Imagine tens of thousands of these things, heavily armored and bristling with weapons, trudging into a city to take it. Terrifying, and the potential basis of a cool thriller sci-fi movie where we of course overcome the robots and win in the end. This movie may have already been made, even. But when they're on our side? Each one remotely directed by a US soldier from perfect safety?
That becomes profoundly disturbing. Throughout human history it has never been possible to wage a war without suffering SOME human casualties. If a war can be waged by drone air, sea, and land forces, without risking a single American life, won't it become terribly attractive?