Not, not really. Imagine a road. On one end of the road is the little town of "Isolation." On the other end of the road is the town of "Completely Merging." Isolation has a sentry guard on the edge of town. Nothing gets in or out of this town. Meanwhile, at Completely Merging, there are no guards. As a matter of fact, no one there ever asks a question about what goes in or out.