No scene from prehistory is quite so vivid as that of the mortal struggles of great beasts in tar pits. In the mind's eye one sees dinosaurs, mammoths, and saberteeth tigers struggling against the grip of the tar. The fiercer the struggle, the more entangling the tar, and no beast is so strong or so skillful but that he ultimately sinks. Large-system programming has over the past decade been such a tar pit, and many great and powerful beasts have thrashed violently in it. Most have emerged with working systems - few have met goals, schedules, and budgets. Large and small, massive or wiry, team after team has become entangled in the tar. No one thing seems to cause the difficulty - any particular paw can be pulled away. But the accumulation of simultaneous and interacting factors brings slower and slower motion. Everyone seems to have been surprised by the stickiness of the problem, and it is hard to discern the nature of it. But we must try to understand it if we are to solve it.

The Mythical Man-Month: Essays on Software Engineering, Anniversary Edition (2nd Edition) by Frederick P. Brooks

ISBN: 0201835959 This book is available from Amazon