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> Absolutely true. But if that centralizer is simply a node in the P2P
> network, what happens when it propagates that inference to other
> to more complex models (I ended up with the possibility of having
> multiple levels of reification : A says 'B says "C says 'foo'"').
Yes, this is the kind of problem I imagine; which is why I suggest
staying away from information which needs to be more trustworthy than
the average usenet post.
NNTP network is an example of this sort of P2P network of
intermediaries, and you have some of the same issues. Vax10 asserts
that Unix22 asserts that email@example.com said the following... No
protection against spoofing or alteration.
Maybe certificates are an answer, but certs get tricky with aggregation
and non-trivial inferences. Certs are tricky, period -- how many people
use certs for e-mail, even? So I'm not anticipating a trust system that
functions any better than usenet anytime soon.