Detection Is Not a Strategy

A startup, research lab, or hyperscaler announces a new tool to detect AI hallucinations every few weeks, marketing it as a "guardrail" for safe AI. However, any detector must already know the correct answer to catch a falsehood, making detection an ineffective primary strategy rather than a reliable safety plan.

Every few weeks, someone announces a tool that detects AI hallucinations. A startup, a research lab, a hyperscaler bolting a “trust layer” onto its chatbot. The release uses the word “guardrails.” Everyone nods. Another brick in the road to safe, reliable AI. I want to argue that we are cheering for the wrong thing — that hallucination detection, however clever, cannot be the strategy. It can be a backstop. It can be a monitor. It cannot be the plan. And the reason is older than computing. Start with the trap at the center of the whole idea. To catch a hallucination, your detector has to know the right answer. Sit with what that means. The original model produced a confident falsehood because it did not … The post