I was thinking about the "space and time" analogy a few weeks ago, then nostr:npub1ej493cmun8y9h3082spg5uvt63jgtewneve526g7e2urca2afrxqm3ndrm comes out with this beautiful article: https://petertodd.org/2024/covenant-dependent-layer-2-review

🤯

I like the suggestion: "do a consensus cleanup soft-fork, followed by CTV."

I would add SIGHASH_ANYPREVOUT.