a page can be private, where only the user owner can see it
Daily notes will begin as private. perhaps they should always be private, and if you wish to extend something's permission, you must instantiate a new page either in your daily note, or elsewhere (floating around in space, having clicked the "new page" button)
Perhaps all pages will begin as private
I wonder if we could style private pages differently? Make it obvious
Perhaps these should just be called Drafts ? This would psychologically imply that you should eventually share them