Zio Mc on Nostr: Is there someone who can explain how nip59 works? I red the nip here ...

Is there someone who can explain how nip59 works? I red the nip here
https://github.com/nostr-protocol/nips/blob/master/59.md

But is not clear why i need the rumor, i can use the content unencrypted directly in the seal.

#asknostr