Heya all!

Been working with libraries for about 2 years now. Not on a daily basis but still. Reconfiguring some stuff atm and something just puzzles me:

If I grant all rights to Public or set a Distribution List to have all but Librarian rights, what does that mean? Users still don't see all imported documents!

If the users don't set rights on the documents (manually or by editing sharing defaults) the documents remain "private".

Is this correct?
If so, why not just have the "Add" -right on libraryobject?
(what use are the change, reset, etc. right)

What am i missing?