You know that script that's been running flawlessly in production for 3 years? The one you wrote back when you were still figuring out what a promise was? Yeah, it just broke. And now you're desperately hoping it's some freak occurrence—a solar flare, Mercury in retrograde, literally anything but another edge case you'll have to debug. The prayer is real: "Please let this be a cosmic ray flipping a bit in RAM and not me having to dive into code I barely remember writing." Because if it's an edge case, you know what that means—dusting off ancient documentation (if it exists), deciphering your past self's questionable variable names like temp2_final_ACTUAL , and explaining to your team why the script that "just works" suddenly doesn't. Spoiler alert: It's always an edge case. The cosmic rays never take the blame.