Because it’s important to be able to differentiate a robot’s smile from a sneer, this is a video of Engineered Arts’ Ameca robot (previously) demonstrating its numerous facial expressions in a mirror. It’s relatively impressive I suppose, but the best facial expression in the whole video isn’t one of Ameca’s at all, but from the guy sitting at the computer in front of it. That facial expression speaks volumes. Volumes about regret. “Shit, what the hell have I gotten myself into?!” his face is practically yelling at me.