In a recent article there was some new information about Steve Jobs from his replacement, Tim Cook. If you are a public square leader or manager his advice is very useful: "Why be vague? Ambiguity is a form of selfishness." The link below to the article is worth a look.
http://www.vox.com/2015/2/28/8124303/steve-jobs-best-advice-for-managers?utm_medium=social&utm_source=email&utm_campaign=vox&utm_content=share:article:top