This note is currently under review for currency.
In managing the cost of a project relative to the agreed budget, there are many variables that can be manipulated. It is in the process of juggling these competing priorities that the real success of a project is determined. Stated most simply, the design intent is realised through achieving the correct balance between the competing demands of time, cost and quality. It can be argued that within this set of parameters, any two can be optimised, but to maximise all three may be difficult, if not impossible, to achieve. Part of the skill of the architect is in working with the client to determine the priorities for the project.