Copyright (c) 2013 John L. Jerz
Google searches show that an "effective strategic principle" is what tells a company what to do and what not to do.
http://www.google.com/search?sclient=psy&hl=en&site=&source=hp&q=%22should%2Btell%2Ba%2Bcompany%2Bwhat%2Bto%2Bdo%22&btnG=Google+Search
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