30 lines
902 B
Markdown
30 lines
902 B
Markdown
---
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id: 2026-04-21T11:55:50
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title: 2026-02-17 16:36:35
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tags:
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- topic/estimating
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daily: "[[2026-02-17]]"
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---
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# 2026-02-17 16:36:35
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[[earned-value-management]]
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is frequently stated to be capable of
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"measuring project performance and progress
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_in an objective manner_",[^1]
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an analysis that is either optimistic
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or totally misleading, depending on the context.
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[^1]: [Wikipedia](https://en.wikipedia.org/wiki/Earned_value_management) (emphasis added)
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EVM can be argued to be an objective measure of _progress_,
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but measuring _performance_,
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variance of actual cost/hours versus estimated,
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(obviously) requires estimates,
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which are subject to bias and error.
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If you argue that subject matter expert estimates _are_ objective
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under a Bayesian interpretation,
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then sure, but then EVM is not unique.
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EVM WBS's, as a form of [[estimate-decomposition]],
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suffer from its weakness of compounding inaccuracy.
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