Use your optimizer to minimize NPV90, and compare the results with minimizing NPV. Do this with too few number of realizations (perhaps 10), and you’ll find that the optimizer results are not...

Use your optimizer to minimize NPV90, and compare the results with minimizing NPV. Do this with too few number of realizations (perhaps 10), and you’ll find that the optimizer results are not repeatable. Do this with about 1000 realizations, and you’ll have adequately repeatable results w.r. t. the diameter discretization.