I read understanding sharing, and I still don't understand . (http://blog.agilebits.com/2013/05/14/understanding-sharing)
1) Why do we have to worry about "secure channels". Why not just encrypt the shared info?
2) Why do we have to reshare items every time a change is made?
3) Why do we even have to share every item? Since the dawn of time people have used some sort of sharing group