Quotes About Feasibility

The cone of uncertainty shows that during the feasibility phase of a project a schedule estimate is typically as far off as 60% to 160%. That is, a project expected to take 20 weeks could take anywhere from 12 to 32 weeks. After the requirements are written, the estimate might still be off +/- 15% in either direction. So an estimate of 20 weeks means work that takes 17 to 23 weeks. Figure 1.1. The cone of uncertainty narrows as the project progresses.

It is odd that we never question the feasibility of a football team practicing long hours for one game; yet in writing we rarely give ourselves the space for practice.

practically

Can you imagine my joy at the feasibility of the general covariance with the result that the equations of the perihelion movement of Mercury prove correct? I was speechless for several days with excitement. (Einstein to Ehrenfest)