As I understand it, in the fediverse the divide literally exists in the network topology. Members of Group A share an address space with members of Group B, but

As I understand it, in the fediverse the divide literally exists in the network topology. Members of Group A share an address space with members of Group B, but the structure of the fediverse prevents them from sending messages to each other. This is interesting to talk about because it's a pretty unique situation. Other decentralized systems have converged on a single globally connected network everyone uses; either everyone can visit your website or your website is irrelevant. (You're either allowed on Twitter or banned from Twitter.) Individual blocks exist but they aren't widespread enough to break the whole network into pieces. The closest comparison I can think of is when Russia disconnected itself from the Internet. Everyone was still nominally part of "the Internet", they all still used globally unique domain names and IP addresses and stuff, but suddenly Russians could only access Russian websites and non-Russians could only access non-Russian websites.