Osmium is the offshore trading centre, subjected to the pressure of liberated commerce.

All trading routes connect to this crucial node.

As more goods arrive, the dynamic web of bargaining places become denser.

Every buyer finds a seller, exchange accelerates

like Noise in the densest medium.

island Latin "insula":

1. detached or standing out by itself
2. urbanistic connotation in that it was used to indicate a block, i.e. a building or group of buildings bounded by streets