On: The Chapter In The Bible That Appears Twice

[DougWebb]

Wow. I didn't know copy protection was that old. Map makers do the same thing, by introducing intentional errors.

[tierack → DougWebb]

This isn't copy protection, or even watermarking to identify who's "leaking the source".

Hand-copying text is error-prone, and copies are often made from copies, so there's the chance to reconstruct a "family tree" even after knowledge of what copied from what is lost.

See, for example, this: http://ahds.ac.uk/archaeology/creating/case-studies/canterbu...