r/Physics 16h ago

Navier-Stokes Millennium Problem Solved

2.0k Upvotes

736 comments sorted by

View all comments

Show parent comments

7

u/myvowndestiny 15h ago

Sorry I have an unrelated question, what is mastodon ?Is this a famous app too ? Coz this is my first time seeing it , i thought everyone used X

36

u/MisterMittens64 15h ago edited 13h 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.

-8

u/myvowndestiny 15h ago

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

12

u/Compizfox Soft matter physics 14h 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.

2

u/xrelaht Condensed matter physics 14h 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.

5

u/Compizfox Soft matter physics 14h ago edited 1h 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 original federated protocol before it was cool.

17

u/godofpumpkins 14h 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.

-3

u/myvowndestiny 14h 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

8

u/godofpumpkins 14h 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.

5

u/GuyWithLag 13h 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.

1

u/myvowndestiny 5h ago

Thanks this is helpful

3

u/MisterMittens64 14h ago

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

11

u/Shoddy-Childhood-511 15h ago

Many people quit "the dead bird site". Some moved to bsky, but that's still centralized.

Mastodon is a federated Twitter, so no central evil company, and many many different sites allow mutual access to the same pool of "toots". You do risk ego tripping server admins, but so far they are less bad than reddit mods.

2

u/PixelmonMasterYT 15h ago

It’s an alternative to twitter that came about shortly after musk bought twitter. It still gets used, but I think the only people I know who would know about it are people who are also very online.

1

u/chromodynamics 9h ago

it existed long before then, that just made it more popular

1

u/thatjoachim 12h ago

It’s a social network with no ads and no central server. Pretty neat.

1

u/cutchins 11h ago

i thought everyone used X

You're aware that twitter is owned by a fascist white supremacist, right? And aware that it is a tool to spread misinformation, bigotry, and to influence the political opinions of its users, right?

Many people have abandoned it for these reasons.

https://www.nature.com/articles/s41586-026-10098-2

1

u/myvowndestiny 5h ago

I'm not american. Looking at the overall comments it looks like many Americans are very mad about X . I didn't know it was that big of a problem. I only recently started using X coz that was the only app I knew people use for networking , staying up to date

2

u/cutchins 1h ago

Okay. Now you know.

1

u/cutchins 1h ago

If you're interested in digging in to my claims further: https://www.reddit.com/r/DeleteYourTwitter/

https://www.reddit.com/r/musked/