I'm glad to see exceptions being discussed. I had a coworker who applied an almost religious adherence to YAGNI. We were building the next iteration of our bu

I'm glad to see exceptions being discussed. I had a coworker who applied an almost religious adherence to YAGNI. We were building the next iteration of our build system and were applying the lessons of problems we had in the previous iteration and a coworker maneuvered management to take over the project and threw everything out because YAGNI. He wanted to start from scratch and get direct proof of problems for everything we designed into the system, throwing out all of the years of experience in supporting our build system and the limitations it had.