The Peter Principle observes that employee tend to rise to their level of incompetence. It's a sarcastic take on corporate culture, but many of us have seen technically brilliant people get promoted into nontechnical roles where they struggle to manage people and teams. Chicago Booth's Christine Carpenter shares her insights on people skills and leadership. Can technical experts become successful people managers? And what are the key skills that can help to promote transparency, innovation and effective communication within teams?