The Hidden Cost of "It Works": Why Quick Fixes Kill Long-Term Speed

It was a Thursday afternoon when the Teams message came in. A bug in production. A date formatting issue causing checkout to fail for users in certain timezones. Small bug, real impact: the payment flow was broken for roughly 8% of users. The fix took twelve minutes. A single condition, a timezone offset, a hotfix deploy. Everyone was relieved. The PM sent a thumbs up emoji. The on-call engineer closed the ticket. Six months later, that same timezone logic had been copy-pasted into four other pl