Difference between revisions of "Monitoring and Evaluation"
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Sir William Thompson, Lord Kelvin (1824-1907) | Sir William Thompson, Lord Kelvin (1824-1907) | ||
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Revision as of 04:32, 24 January 2007
When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge of it is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely, in your thoughts, advanced it to the stage of science.
Sir William Thompson, Lord Kelvin (1824-1907)
