We have the Internet Archive (archive.org) to backup lots of this information via the likes of the Wayback Machine. Books & physically documents can decay natu

We have the Internet Archive (archive.org) to backup lots of this information via the likes of the Wayback Machine. Books & physically documents can decay naturally or be damaged physically, digital media can be damaged physically too. A hard drive or SSD can fail at any time, a disc can be scratched, a tape can get tangled. Easier and more accessible redundancy is an advantage of digital media.