@pastecat In deep theory, it's also possible to piece back the documents from paper shreds together, but in practice it's all but lost.

I'm kinda starting to think we're bordering on scholastics at the black hole information problem. Like "the angels on a pin" question of old. Fun to beat around about, useless in practice.

If our current theories are correct and all of the physics is actually reversible and the arrow of time doesn't really exist, of course. Which is an open possibility, so... I guess, we'll see. Or we won't. It's also an option.