Asking for efficiency and adaptability in the same program is like asking for a beautiful and modest wife. Although beauty and modesty have been know… - Gerald Weinberg

The Third Law of Consulting: Never forget they're paying you by the hour, not by the solution.

If builders built houses the way programmers built programs, the first woodpecker to come along would destroy civilization.

We were doing incremental development as early as 1957, in Los Angeles, under the direction of Bernie Dimsdale [at IBM's ServiceBureau Corporation]. He was a colleague of John von Neumann, so perhaps he learned it there, or assumed it as totally natural. I do remember Herb Jacobs (primarily, though we all participated) developing a large simulation for Motorola, where the technique used was, as far as I can tell, indistinguishable from XP.