I think this is missing out on a lot of other higher bandwidth source of information about us. Part of the problem is a focus on output, as if creating a pale imitation of the process of scanning a brain. But you could also reconstruct much of brain by looking at the things that went into it: DNA, the environment. tack on the records that are already automatically made of its choices, and you isolate a very small part of the potential mind space.

Any person with my DNA, my grades, my bookshelf, my pantry, my bank statements and my web VIEWING history would be quite a bit like me, tack on the things I've posted and my Gmail acount, memories from people who know me, and a hi res visual scan of places I go, and you've got a pretty narrow criteria for rebuilding.

From here: the phobia that this was the last post of my original, and my simulated life has reproduced all the artifacts left by my original. (or that my artifacts have begun to deviate, and I am no longer a candidate for a true copy.)