[jandrewrogers]

Eh, copying is not always trivial. Much of the work on computational discrete topology circa 2007-2009, for example, is still nowhere in public evidence, despite its criticality to some key domains and obvious value. No one has copied it, more than a decade hence. Information does not flow that freely even when it is old.

[ganzuul]

Need a bit more information to know what you are talking about.