So what happens if you want to delete a post you made earlier? Is that possible? Or are we stuck with whatever we posted for all eternity?
Discussion
Depends. Refer to nip-09
https://github.com/nostr-protocol/nips/blob/master/09.md
But assume that once something is out there, it cannot reliably be retracted.
You are stuck. You can ask relays to delete it. But people can keep a copy of your signed (and thus verifiable) message