Lisa was recently asked this question by her boss who is keen to finish the current project and to get started on the next. Lisa explained there are a number of uncertainties and presented the following as a crude but credible evaluation and estimate of the number of days required.
Her boss was pleased to have numbers she could work with and though 55 days initially seemed high, the transparency of the approach meant she understood why this should be expected. Contingency plans have been developed and her boss is managing expectations on both projects.
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