High availability target of 99.999% uptime (~5.26 minutes of downtime per year). Rarely seen in autonomous hardware.

Artificial General Intelligence: theoretical machine intelligence matching or exceeding human capability across all cognitive domains.

A confident response generated by an LLM that is completely ungrounded in factual reality or training data.

Zero Moment Point: the point on the ground where the net dynamic force acting on a bipedal robot produces no horizontal moment.

Systems designed to autonomously execute multi-step goals, frequently achieving novel forms of failure along the way.