14. Limitations of PERT
PERT extends the standard CPA but has some advantages
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To overcome the last point, if the PERT is modelled on a computer, then a technique called 'Monte Carlo' simulation can be used. This is where each path is allowed to vary randomly slightly (within limits) to see how sensitive the overall project becomes to delays. If a path is partcularily sensitive then management time and resources can be applied to make sure that activity keeps on track.
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