• Profile photo of John Moffat says

      Its not really a question of calling it the optimum.

      The problem is that we are making a decision on forecasts of cash flows, and therefore the actual cash flows may turn out to be different – if they are different then the NPV might turn out to be negative and then we will have made the wrong decision.

      The higher the sensitivity the less the chance is of that flow changing enough to affect the decision. However if the sensitivity is low, then it means that even just a small change in the flow will affect the decision. Therefore the lower the sensitivity the more risk we are taking and therefore the more we will try to estimate the flow accurately (or else maybe decide not to take the risk).

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