Barrett & Stanley [3.p. 3] have a fine description of this problem: "If any attempt is made to change the parameters of the project, as the client's confidence, knowledge and feel for the issue increase, the client is politely reminded of their original statement (...) Not surprisingly the client involved in a project of this sort is often disappointed with the building finally produced (...) a full understanding of the client's real underlying needs has never been allowed to surface.