If you blindly accept what clients say they want and proceed with a project on that basis, both you and the clients may be in for a rude awakening. You will have built something the clients cannot use. Often in the process of building a solution, the clients learn what they need is not the same as they say they wanted.
Here we have the basis for rolling deadlines, scope creep, and an endless trail of changes, reworks, over-budget situations, and schedule slippages. Traditional project management has to strain to keep up with the realities of projects such as these. A lot of time is wasted planning things that never happen. It’s no wonder that more than 65% of projects fail. That has to stop.
Source: Adaptative Project Framework, Managing Complexity in the Face of Uncertainty, Robert K. Wysocki, Addison-Wesley