Hm, I have the following questions:
-How accurate is the dating of the actual material? (eg some scroll)
-How would it be possible to have considerably less (or none at all; at least by technological means alone) accurate/valid dating of such a scroll's content? I had the idea of having the text not be penned/inked on the scroll, but carved on it (eg using some letter-blocks which remove part of the scroll to carve the letter, but if possible -better this way for me...- just by using a sharp object like a dagger. Would this work at all to make the text (carved) not possible to date? Or is it just circular and the gap would be dated (in this case, how can I do it so as to avoid this?)
(obviously this is for some short story

)

To give an idea of the times: If, say, it would be possible to date (just with tech means, not linguistic - that isn't of interest atm) a manuscript (material) to the 8th-9th century AD, could the trick with carving work so as to make the content not be easy to date using the same methods?