This is very true. Most programmers don't preserve
(at least for very long)
half-completed software -- even if it was never completed. (Well, Bill
Gates and WinBlows anything is an exception!!! ;-)
I really do not buy this point. Just about every software development
company I know of uses a revision control system to keep every bit of
working code that the programmers type out. This includes the hundreds
of tiny revisions that are made between releases, even the "dead-ends".
William Donzelli
william(a)ans.net