the regulator demands

evidence that cannot exist

These 21 problems hit the same regulatory wall: the evidence the regulator demands doesn't match the technology's actual behavior. AI medical devices continuously learn, but FDA clearance assumes a frozen algorithm. Hydrogen pipeline welds operate under conditions existing fatigue tests never anticipated. Neonicotinoid risk assessment methodologies were designed in ways that systematically underestimated pollinator harm. Distinguished from the “the rulebook was written for a world that no longer exists” family by the existence of a framework — the “the regulator demands evidence that cannot exist” family has rules, but the rules require the wrong evidence.

A regulatory framework exists — but it demands evidence in a form that doesn't match how the technology actually behaves, and sometimes the methodology was designed to avoid finding the problem.