19.1: Lying and collaboration
Description: David clutterbuck talks about how our ability to work as groups was one of the distinguishing factors between us and neanderthals

19.2: What are you unable to talk about?
Description: David discusses an exercises he uses to make teams more honest with each other

19.3: Your Part is more Important than Mine
Description: David talks about the importance of support in a real team

19.4: Secure Leaders
Description: David talks about the importance of self-secure leaders in a cohesive team