如果不度量效率，人们很快就会忘记愿景、任务和目标。
Without measuring effectiveness, vision, mission and goals are soon forgotten.
仅仅度量原始的工作效率，这就完全丧失了上面提到的敏捷的重要效应。
Just measuring raw productivity will totally miss this important effect of agile.
很多时候，要度量知识工作者的工作效率是很困难的。
Measuring knowledge worker productivity is hard at the best of times
很多时候，要度量知识工作者的工作效率是很困难的。
Measuring knowledge worker productivity is hard at the best of times
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