Harold, I have a question. I love reading about the way sharing through networks is invaluable for creativity and problem solving.

'Trusted networks' seem a sensible climbate, where ideas are shared liberally and mutually.

Do you think there are any circumstances where social networks should protect themselves, from others who may wish to take without sharing, perhaps to compete with and get a short term one over on the sharing economy? Or can openness triumph over that too?