The (false) belief that large, innovative software designs can be completely specified in advance and then painlessly magicked out of the void by the normal efforts of a team of normally talented programmers. In fact, experience has shown repeatedly that good designs arise only from evolutionary, exploratory interaction between one (or at most a small handful of) exceptionally able designer(s) and an active user population - and that the first try at a big new idea is always wrong. Unfortunately, because these truths don't fit the planning models beloved of management, they are generally ignored.
Try this search on Wikipedia, OneLook, Google
Nearby terms: crayon « Cray Research, Inc. « CRC « creationism » creeping elegance » creeping featurism » creeping featuritis