Is criticism of impact measurement fair?

In this piece for Civil Society, Genevieve Maitland Hudson asks the question: Might impact measurement deserve the criticisms levelled at it?
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“Based on available data though, it looks like its critics are right, impact measurement isn’t living up to its hype.”
About the author
Genevieve Maitland Hudson is head of evaluation and impact assessment at The Power to Change.
Further reading
Why measure impact? Six reasons for all changemakers, by Alan Pierce