I wouldn't say the memory on a disk will not be possible some day (if
not already). I have said for a long time I would like to have my memory
copied before I die and have it put into a clone of me. If they ever
succeed in such a process, a person could live forever. Your brain is
like a computer and something like this may very well be possible. I
have lived long enough to realize that anything man can think of might
be possible. When I was a small kid in the 1940,s, I read comic books
such as Buck Rogers etc.. I remember my grandmother saying to me, why do
you read such trash, don't you know that could never happen. Well
granny, half or more of that trash has happened with more on the way.