[matude]

Aka "9 women won't give birth to a child in 1 month". An example often used to describe how adding more developers doesn't necessarily solve an issue quicker.

[waynecochran]

"What one programmer can do in one month, two programmers can do in two months." - Fred Brooks

[gumby]

Credit for this goes to Fred Brooks, and appears in his famous book "The Mythical Man-Month"

[JustSomeNobody]

Yes it does. I could not find my copy to find the quote I wanted to use so I used my own (not quite as effective) words.

[gumby]

Didn't mean to imply you'd done something wrong, just added to your comment.