But there is no delete in an immutable data store; and, quantum information is never lost.
I even disagree with their quoted “For the first time, historians can find without knowing where to look,” - We've had librarians and research assistants for centuries, so it was always possible to find things even if you aren't sure where to look. It's just that now we have another way of achieving this, which to me is not that much different from the appearance of computerized databases about 50 years ago, and the appearance of effective online search engines about 25 years ago.
squircle•4h ago