Thesis: A gate being green is not enough. When it turns red, it must be readable —and the guard that makes it readable must stand where it cannot disappear . To test my assertion, I deleted SKIP LOCKED from an outbox claiming query in my side project's sync layer, leaving a plain FOR UPDATE .
Source: [Dev.to](https://dev.to/onurkesim/your-test-went-red-can-you-read-it-4mm4)