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Bibliographic Item (1.0)
- Phillip G Armour
- Counting Boulders and Measuring Mountains
- Commun ACM V49n1(Jan 2006)pp17-20
- =ANALOGY ESTIMATION PLANNING Project Management WBS COCOMO SLIM-Estimate Everest
- Argues that you don't get a good estimate of the size of a mountain by estimating the rocks that make it up and adding up the numbers.
- WBS::="Work Breakdown Structure", count the rocks in the mountain.
- Executives then ask for a better estimate/plan.
- Scope-based implementation is more like using surveying tools and techniques to measure the mountain.
- Use the scope of the project to estimate final system size.
- Time depends on a power of system size.
- Since scope is uncertain and the estimates of size based on a given scope add uncertainty, one generates effort estimates that have a range of values.
- Quantify the uncertainties!
- No discussion of the agile approach (start climbing the mountain first, and
change your estimates as you climb, etc.)
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