Theoretically, the NPV is the most appropriate method to determine the acceptability of a project. A false sense of security can overcome the decision$-$maker when the procedure is applied properly but the positive NPV results are accepted blindly. Sensitivity and scenario analysis aid in the process by:

providing information on a number of potential outcomes.

providing assurance that the most appropriate discount rate is being applied.

ensuring all estimated values are accurate.

guaranteeing the NPV will be achieved.

ensuring the NPV value was calculated correctly.