Let us consider an example.[3] Suppose a task is estimated at 12 man-months and assigned to three men for four months, and that there are measurable mileposts A, B, C, D, which are scheduled to fall at the end of each month (Fig. 2.5). Figure 2.5. Now suppose the first milepost is not reached until two months have elapsed (Fig. 2.6). What are the
