@EmperorNero,
Is it a valid concern that there be many variations of books? Say, a sort of "wiki" alteration/adjustment capability goes much abused and unregulated thereby pouring forth a flood of changed versions of books? This is available now with e-textbook companies where one can select certain language preferences and file share these versions.
I don't think the posters concerned with a digital age Farhenheit 451 were worried about as much a total effacement (which yes, is unrealistic) than the essentially same effect through not knowing which is the original (in a situation where no hardcopies were on hand). This effect doesn't even have to progress to such a degree that even nearly approaches completeness. If it happened enough to make people distrustful enough to always refer back to the paperback, wouldn't that reduce the value of e-books next to nil?
I haven't the slightest idea as to how e-books are distributed, so my questions above were not efforts to try to make a point. I was asking honestly if this is something to be anticipated.
Or in a briefer question...is multiplicity of sources good for us in this respect? Or is "centralizing" through the paperback a critical safeguard we took very much for granted?