At least one of the reasons why is that there were no hard drives a thousand years ago.
Sure, stone and to some extent paper might be more durable. But the replication and transfer capabilities of digital media can ensure that the knowledge will not disappear in a fire, as long as the civilisation persists.
Sure, stone and to some extent paper might be more durable. But the replication and transfer capabilities of digital media can ensure that the knowledge will not disappear in a fire, as long as the civilisation persists.