Part of my philosophy is that the Bitcoin ledger is the hardest immutable source of truth we have ever known. It will be used as hard evidence that things are ordered in the way they were broadcast. Going back in time would allow you to (aside from being wealthy) change the natural order of things - which to me will have been far more valuable than money. Therefore, if it had been possible in the future, it would have already happened in the past.

Oh no, now I'm cross-eyed.