Team players aren't afraid to say they don't know something. They talk about it and look for solutions with the help of their colleagues. Managers should also lead their subordinates to pursue team success rather than only promoting themselves.
You can read more about how Jim Whitehurst applies the rules of team work in practice in his book entitled The Open Organization which has just been released.
WHITEHURST, J.: The Open Organization, Boston: Harvard Business Review Press, 2015. 256 p.
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Article source Harvard Business Review - flagship magazine of Harvard Business School