I am a firm believer that you need a well-defined leadership role to deal with unexpected and non-linear side effects of people working together. You need someone to keep the threads untangled and forming a high-functioning web rather than a big snarl of a Gordian knot.
RandsSnark from nerds is a leading indicator that I'm wasting their time and when I find it, I ask questions until I understand the inefficiency so I can change it or explain it.
Rands