[teh_klev]

Spelling corrections, factual accuracy corrections that kinda thing needs the ability to be edited.

Using HN to publish "lasting value" content isn't the same as publishing a book where likely you'd work with an editor to reach the final error free imprint. Even an e-book can be updated to allow corrections, and future print editions can be published with corrections or an errata.

After a certain time limit you can't even add a new reply to your own "lasting value" post that could contain these types of changes.