The way you get information about the World is through LiveQueries. We set criteria for what part of the World we are interested in at each given moment. That way, the Replicator won’t send information about everything that is going on in the Game World everywhere, at all times.
Instead, we will just get information about what’s within a certain area, kind of like moving a torch to look around in a dark cave.
More complex areas of interest types are coming in future versions of coherence.