Stephen and angela talk about how bad people can be at assessing potential risk. Let's all pull our risk together as a society, so that when angela messes up, i can suppsort exactly no. Why does music move our bodies and why do we have social hierarchies? Join dessa the host of deeply human, in cornering all sorts of brilliant people to find out why people behave the way they do. Deeply man a b b c world service and american public media co production with hig heart media.