Part 3 of 3 — "Memory for AI agents" Why the right metric isn't accuracy — it's zero confidently-wrong actions Article Picture two scenarios. In the first — a senior cardiac surgeon looks at a scan and says: "I don't know. There are two competing hypotheses here, the symptoms overlap. We need additional tests — these three specifically, and a CT with contrast. Until I see those, I won't commit to an answer I'd defend." In the second — a bright-eyed intern confidently delivers a diagnosis in thirty seconds, leaning on a similar case from last week's textbook. Confident. Crisp. No doubt. Which one would you trust to operate on your mother? Right now, every AI agent we ship is the second doctor. Confident. Fast. Never says "I don't know." And that's exactly why you can't trust them with anything more painful than rewriting a README. Today — how to change that. Not algorithmically. Architecturally.…