Kirk Cheyfitz

It is absolutely silly and creates big problems, as many users have been saying for the past 5 years, not to enable sharing of stacks. I am trying to collaborate with a co-author on a book and I current have some dozen notebooks in a stack for the book. I need to be able to add notebooks, duplicate and move notes among multiple notebooks, see new notebooks the co-author is adding and, as Richard Feynman originally requested, preserve the hierarchy of the notebook structure and keep it visible to my co-author. Why has there been no action on this request for half a decade? And no response from Evernote?