It is better to lead from behind and to put others in front, especially when you celebrate victory when nice things occur. You take the front line when there is danger. Then people will appreciate your leadership.

Nelson Mandela

Both business and programmers are tempted to fall into the trap of premature precision. Business people want to know exactly what they are going to get before they authorize a project. Developers want to know exactly what they are supposed to deliver before they estimate the project. Both sides want a precision simply cannot be achieved, and are often willing to waste a fortune trying to attain it.

Robert C. Martin