When you add more programmers to a late project...

it gets even later!!!

--
Title: 7 Painless Functional Specifications > 3. But, How?
URL: http://www.joelonsoftware.com/articles/fog0000000034.html
The Mythical Man-Month
- Frederick Brooks,
- 'The Mythical Man-Month: Essays on Software Engineering'
- (Addison-Wesley, 1975)

Joel's comment about that book:
The main point of that book was that when you add more programmers to a late project, it gets even later.