"Productivity is notoriously difficult to predict." — Alan Greenspan

More Difficult Quotes

This quote is filed under Difficult Quotes, one of 6,176 quotes in that category. Here are a few more:

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• Software is like entropy. It is difficult to grasp, weighs nothing, and obeys the second law of thermodynamics; i.e. it… — Norman Ralph Augustine
• Because a thing seems difficult for you, do not think it impossible for anyone to accomplish. — Marcus Aurelius
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