On Dec 9, 2014, at 12:00 PM, Tim Wicinski <tjw.ietf@xxxxxxxxx> wrote: > I would concur that is something that the everyday yang user should never have to do on a regular basis. If we do, then we need to fix this. I believe this is why libraries were invented. If by "everyday yang user" you mean an ops person in a data center, then I agree, but that's not what I was talking about. What I mean is that if yang is hard enough to understand well that only someone who hacks yang models full-time can do it, then that's a bit of a problem since we need people who are experts in the protocols and systems being _managed_ to be writing yang data models. And those people are not going to be doing yang full-time.