We were in a crunch to get version 2.0 out. Had the weekly progress meeting with the director. He had received some feedback from our remote sales team and he read one out loud that he thought was particularly funny. And it was, at least at first. Sounded like a old person flailing around with computers. But, then it hit me. This teacher was describing an edge case where a certain sequence of buttons would cause the whole program to lock up.

It was funny in part because the sequence wasn't something any of us would consider logical. So we had never tested for it. But I was able to duplicate the crash on my system and fixed it.

That was the epiphany. I convinced the director to push out the release date and we went through the backlog of ramblings and rants. Over half of them ended up being very useful.