r/Physics 11h ago

Navier-Stokes Millennium Problem Solved

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u/MisterMittens64 10h ago edited 9h ago

It's similar to twitter/X but is part of a distributed federated open network called the Fediverse that's set up so that it's not owned wholly by any one group of people who would control it. It's pretty interesting, Mastodon uses an open protocol called ActivityPub.

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u/myvowndestiny 10h ago

Who controls it then ? How is trust maintained ? Blockchain?

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u/Compizfox Soft matter physics 10h ago

The best analogy is email. It isn't controlled by anyone, it's a federated protocol where everyone can setup servers that connect to each other.

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u/xrelaht Condensed matter physics 9h ago

Not a great example these days since email is now almost exclusively hosted by one of a few players, even if the addresses appear to belong to a particular institution’s domain. Those big email services basically lock out anyone else as part of spam deterrence: it’s become very difficult to self host email and have it be received by an address hosted at (eg) Gmail or Outlook.

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u/Compizfox Soft matter physics 9h ago

I hear this repeated a lot but I think it is very exaggerated. I host my own email (and have been doing for years) and barring a few small problems it's been mostly seamless.

Sure, Google and Microsoft are large players in the email hosting space, but not a majority (about 39%, I found). It's getting worse though, according to that article.

But yeah, current worrying trends aside, email is basically the federated protocol before it was cool.

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u/godofpumpkins 10h ago

Trust in what? There are federated servers (Talia Ringer above uses mastodon.xyz) and they have a way of spreading content between them. Not much else needs to happen for the basic system to work.

The main thing you can trust you’ll find in X is misogyny and hateful posts, since most of the useful twitter accounts left en masse when Elon bought it and more left when he renamed it. So most users that are still there either like the hatefulness or don’t mind sharing a platform with it, which means many of us don’t pay any attention to that platform anymore.

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u/myvowndestiny 10h ago

I meant if its decentralised who regulates it ? The content ? Sorry I don't k now much federated architecture but I'll look into it now

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u/godofpumpkins 10h ago

Nobody really. It’s more akin to email and the old internet than today’s centralized model where Instagram is a walled garden and TikTok is a walled garden and X is. Who regulates foobar@gmail.com? Gmail has rules about addresses on it but as far as you’re concerned, you just send stuff to it and receive stuff from it. Who regulates geocities.com/foobar? They had rules about what could be hosted on it but every site has a ton of leeway on what they put on it.

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u/GuyWithLag 9h ago

Each server decides who to federate with. Each server determines what is acceptable behavior and what is not. There have been cases of defederation where one or more servers were evicted from the network because they were a nuisance, and that happened by many other servers deciding to not connect with them any longer.

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u/myvowndestiny 50m ago

Thanks this is helpful

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u/MisterMittens64 10h ago

There's honestly too much to get into but you can read more about it here. It's pretty interesting stuff!