Editor's Note: This interview with Ethos water founder and social business activist, Jonathon Greenblatt is not conclusive but it's extremely interesting. Greenblatt provides no easy answers to the great question in the title of the article but speaks wisely from his own experience and about other social businesses and the B corp certification process. Thanks to Ron DiMattia for passing this on to us.
http://knowledge.wharton.upenn.edu/article/how-do-social-entrepreneurs-know-theyre-doing-good/
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