Elbmar wrote on March 8, 2021 at 6:21 AM (edited on March 8, 2021 at 6:25 AM)

Reply to comment by Wahaha in How do P2P, decentralized networks work when it comes to a user or individual wanting to remove their information from it? by Rambler

I think the main advantage of decentralized over centralized is that other people can't memory hole your posts. If you can memory hole your own posts, that is an advantage. If you ever get in trouble with the law, it's helpful to have no online history that they know about. Ideally, they will not know your username, but the right is too online now compared to the left. The right really should be using the internet to facilitate offline organizing more often, and that introduces the possibility of law enforcement knowing your online identity. But for example, if you are defending yourself from Antifa and get charged with assault, you may be happy if you deleted all your posts before meeting up with people so nothing you said can be twisted and used against you (though they might say it's suspicious that you deleted all your posts. It's nice that in Matrix, changing your password encrypts all your old posts by default, which looks less suspicious). The NSA or FBI could certainly still have the posts you deleted and know that you made them but local law enforcement is not so sophisticated.

I think you could have scuttlebutt or something like it, which stores all messages for you to read offline, but also have a feature where if you say that you want all of your posts deleted, then your computer could send that message out to all of your peers. They would forward that message to any of their peers who can also read your messages. (See the "Follow Graph" here https://ssbc.github.io/scuttlebutt-protocol-guide/#follow-graph ) The peers that are already online would respond immediately and delete your posts from their local store. Some of your peers and peers of peers with access to your posts could be offline so they would still retain your posts temporarily, but when they connect to the internet again, those peers would see that you want your posts deleted, either by checking with you or their peer who is connected to you, and they would immediately delete them as well.

In the scuttlebutt documentation I saw that in the future they do want to allow people to delete posts and it is just a feature they haven't implemented yet. They also want to hide IP addresses by default.

We want Scuttlebutt to be a safe cozy place but there are still some things we need to fix: Blocked people can see your public messages.
Content from blocked people is still on your computer. (This is almost fixed!)
Patchwork has some bugs that let you see blocked people in certain situations when they should be hidden
Scuttlebutt doesn’t provide IP address anonymity by itself, but you can use it with a VPN or Tor.
Messages can’t be deleted yet.

https://scuttlebutt.nz/docs/introduction/detailed-start/#stay-happy-and-safe

Wahaha wrote on March 8, 2021 at 8:58 AM

I can see why people would want that feature, but it wouldn't change that somebody would have the ability to memory hole something, which isn't desirable, since it can be used maliciously and thus has the ability to harm trust.

If I can't trust for everything to remain there forever, there's no big advantage over centralized solutions.

Luckily, by design, all the content I see ends up saved on my computer, so with a differential backup, it should be trivial to go back in time and read memory holed posts.

Elbmar wrote on March 9, 2021 at 2:21 AM

Not sure what malicious use would be. I haven't ever seen the type of drama where someone says something, deletes it, and then denies ever saying it and gets into arguments with people about it.

Ultimately, advantages are subjective for different people. You value posts existing forever but many people prefer the opposite. Signal is popular partially because of the disappearing messages feature. I think especially on the right, people will increasingly value privacy over convenience. I think we are probably heading into a very totalitarian, technocratic future where it will be more and more dangerous to have right wing views.

Personally, if I see a very interesting post online, I sometimes just save it in a document on my computer. If scuttlebutt implements the delete message feature, it would be nice for them to also have a save message feature that saves the message but not the username. Or allow users to just remove their identity from messages that they don't want associated with themselves any more. Similar to how reddit shows [deleted] for the username after someone deletes an account.

Patchwork and apps like it could agree to not show deleted messages in their user interface. That way, if someone was making backups, it would be harder to read deleted messages. It would still be possible, but the person doing it would need to know how to decrypt them. Don't know if that would be a desired feature by the community or not, but it would be a way to get the delete feature as complete as possible.

Wahaha wrote on March 9, 2021 at 10:32 AM

If you're participating in a discussion and then memory hole your contributions, nobody can read up on the discussion, since part of it is missing. You could also write up a news story and then memory hole it yourself, if you feel like it.

The ability to remove something you published can be used maliciously. Thus, one of the points of decentralization is to prevent anyone from even having that ability.

Elbmar wrote on March 10, 2021 at 1:59 AM

People can delete their messages but I haven't seen it happen enough that it really bothers me.

Yeah it's preferable for news stories to remain up forever. Maybe IPFS could eventually become popular enough that news organizations use it as well. But in the meantime archivists can use it to archive news stories permanently. I agree that it's important for news articles, scientific articles, statements from politicians etc. to not be memoryholed. But ideally, right wing groups should use private anonymous networks with auto-disappearing messages because it's safer. Members being targeted by law enforcement has a much worse effect on a group than any negatives that might come from people deleting their own messages.