Doesn't it though? If you look at the etymology, manus (hand) + script (write) directly gives you "hand-written", and then a hand-written document is more likel

Doesn't it though? If you look at the etymology, manus (hand) + script (write) directly gives you "hand-written", and then a hand-written document is more likely to be the work of a single author, more likely to refer to an original than a copy, and more likely to be old (before printing, typewriters, or computers). Everything else is just associations that a word picks up over time or in a specific community.