" I made a list: Close physical proximity, often in circles Profuse amounts of eye contact Physical touch (handshakes, fist bumps, hugs) Lots of short, energetic exchanges (no long speeches) High levels of mixing; everyone talks to everyone Few interruptions Lots of questions Intensive, active listening Humor, laughter Small, attentive courtesies (thank-yous, opening doors, etc.) One more thing: I found that spending time inside these groups was almost physically addictive. "

― Daniel Coyle , The Culture Code: The Secrets of Highly Successful Groups