[Zope3-dev] Question: Are principals (sometimes aka users) content or meta-content?

[Phillip J. Eby]

At 07:27 AM 5/8/03 -0400, Jim Fulton wrote:
>Another way to look at this is
>that, perhaps, users/members are content and principals are associated with
>users. Users are content and (for some principals) you can get a user from a
>principal.

This is closest to my view.  In my way of looking at it, principal is just 
an interface that a user or "member" object may implement or be adaptable 
to.  If the principal interface is implemented by an adapter, it should be 
able to adapt "back" to the underlying object as well, so that application 
code can access the user (which may contain privileges or preferences info 
that the application needs access to.)