from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One person's working time for a month, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.
Sorry, no etymologies found.
The problem is that there's not even a handful of people in the project who know enough about this to finish it in around a man-month or so.
Where the mythical man-month applies is in the combined effort on a large, sufficiently complex project.
Even at the Mythical man-month rate of 3 lines a day .. 6 million developers .. thats a lot of code.
It's downside was that it wasn't schema driven so you got your work done, but some critics would say that it didn't following a schema driven, version nightmare system that takes the rest of your man-month to do right.