求學時常常搞混Validation and Verification的涵義。
看到http://www.jodypaul.com/SWE/valver.html有不錯的解釋，如下：
Verification:
Are we building the product right?
To establish the truth of correspondence between a software product and its specification
(veritas = truth)
Validation:
Are we building the right product?
To establish the fitness or worth of a software product for its intended mission
(valere = to be worth)
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