The human concepts of ownership implies a very important right that people tend to overlook: the
right to DESTROY it, to undo it, to "take back what you said".
This is important, because for physical artifacts having the right to destroy/demolish means having the right to create new things in its place (if I inherit a historical monument castle and I can't f demolish it to a pile of sand by my liking, than that's a scam, I don't really own it; also I might want to demolish it for aesthetic/informational reasons too, to "wipe" a part of its history from the human collective knowledge base).
And for informational artifacts, the right to "undo" or "take back" is also important, because the fact that what you say/publish is there to haunt you forever will have a chilling effect... lots of interesting things will go unsaid unwritten.
You have to burn books/libraries/things from time to time, otherwise everyone becomes afraid to write new books or build new things!
And on a physical level death has the same liberating effect. You know you're gonna die sometime anyway, so you can enjoy that cigarette, it increasing your risk of an incurable cancer by 1e-3 percent will not have consequences that will haunt you forever... Death and destruction are necessary for true freedom, at least for the kind of freedom I want to have.
Things like block-chain/graphs combined with content adressability bring significant limitations to FREEDOM. Endless responsibility and accountability for everything you've done and said would make life of all creative and disruptive people a living hell. Heck, if you're not free from at least some of the consequences of your actions, then why do anything at all, why even carry on living.
And on:
> You can't unring a bell, and you can't delete data from the world.
Yes you can, if you kill someone, a part of the information that is in their head and haven't been shared with anyone yet will be lost forever. That's a good thing imo. If everyone who's heard the bell is dead and hasn't told about it to anyone... has the bell truly rung? The information that it has is irrecoverable now. And you can thank your friend entropy for that impossibility to recover this data and for the liberating effect that this can sometimes have ;)