How does a blockchain keep it safe? Safe, in conventional speech, for the time being, usually implies privacy, not immutability.
As for @booleanhunter, I don't mind the existence of ephemeral (or at least temporarily broadcast) communication. I believe it can be improved in its privacy, with or without decentralization, and can coexist with censorship-resistant media. But it's the latter that I feel it is crucial everyone has access to, while the former is just a relaxing "nice to have".
How does a blockchain keep it safe? Safe, in conventional speech, for the time being, usually implies privacy, not immutability.
As for @booleanhunter, I don't mind the existence of ephemeral (or at least temporarily broadcast) communication. I believe it can be improved in its privacy, with or without decentralization, and can coexist with censorship-resistant media. But it's the latter that I feel it is crucial everyone has access to, while the former is just a relaxing "nice to have".
means hard to be changed over multi nodes.