Decades ago I spent a whole day adding a serious new feature to my software. Had the first version all polished up and ready, and through a misunderstanding wi

Decades ago I spent a whole day adding a serious new feature to my software. Had the first version all polished up and ready, and through a misunderstanding with my version control software (probably RCS, maybe CVS, probably not SCCS), I lost that work. Like maybe I did a checkout instead of checkin, something like that. I went to bed quite annoyed. The next day I got up and started from scratch. The new implementation took me half a day, and was decidedly a better implementation. Fred Brooks turned out to be right.