[amitshah]

The problem stems from the expectations that are placed on people here. For example, in school, home-work assignments are due "tomorrow without fail", and then the students just take the easiest way out for the submission.

The mentality plays a second role: once you're in some position of power (a manager), you want to boss around everyone and prove that you're the person in charge. So managers of projects want everything in 20 days when they might charge clients for 90 days. There's hardly time for the people involved to understand the problem and solve it: they just want to make sure the manager gets what he wants.

Moreover, the employees are in a different set of mentality: they think they don't have much power and that they shouldn't question the manager else their job/backside will be on the line. So they just do what's needed, else come up with creative arguments on the last day.