And the same thing with issues like top-down approaches to knowledge sharing or information sharing. Forget about it! . People share in these communities, and these communities will form, if you give people enough bandwidth, enough connectivity. With enough time, space and technology, they find each other. It’s a much more effective way of doing things.
   And a real lesson we’ve all learned is that communities are the place where norms get enforced, not from top down, not from bottom-up. They’re enforced in small groups. Groups. You can call them “communities”. You can call “thematic groups” or “communities of practice” or communities of interest” or “communities of action”.