at even discriminate different objects.

MW: Now in a system, you only have a reference to the real world,
    so my point of clarification is when you say &quot;common world&quot; do
    you mean &quot;common reference&quot;?  Either way it would be useful to
    say something about the link between perception and reality here.

Matthew,

At this point I am still taking a bird's eye view of things, where
individual agents, communities, groups, organizations, societies,
and species of agents all look pretty