And, a short reason why is always good to have a hardcopy. The enterprises know this very well, so the lawyers and attorneys.
Printed means that the content is unchangeable.
How about reading a book, rented book, that comprises something that in the future
someone would think it's dangerous. So, he decides to remove that offending passage from the book. Or changing it, like in
1984, to say
eg that Al Gore defrauded the Florida elections (but still lose them). All the next people will have the wrong info. The book you have it has the true, genuine, original, intended content. Until the
firemen come.