From 11/12/2009 call:
Vesels (containers for action)
Contextual vs. Functional Membranes
Membranes thus define spaces/boundaries, and then also manage them.
(wagn: patterns are the cards returned by a search)
contextual membrane: "people who support Obama" (this is like a search).
functional membrane: member of the democratic party (i.e. token that you can vote)