[ExI] any exact copy of you is you + universe is infinite = you are guaranteed immortality

Stathis Papaioannou stathisp at gmail.com
Fri Jun 15 12:27:12 UTC 2007

On 15/06/07, Eliezer S. Yudkowsky <sentience at pobox.com> wrote:

I mention this to show that the question of what it feels like to have
> a lot of copies of yourself - what kind of subjective outcome to
> predict when you, yourself, run the experiment - is not at all
> obvious.  And the difficulty of imagining an experiment that would
> definitively settle the issue, especially if observed from the
> outside, or what kind of state of reality could correspond to
> different subjective experimental results, is such as to suggest that
> I am just deeply confused about the whole issue.

Related conundrums:

In a duplication experiment, one copy of you is created intact, while the
other copy of you is brain damaged and has only 1% of your memories. Is the
probability that you will find yourself the brain-damaged copy closer to 1/2
or 1/100?

In the first stage of an experiment a million copies of you are created. In
the second stage, after being given an hour to contemplate their situation,
one randomly chosen copy out of the million is copied a trillion times, and
all of these trillion copies are tortured.  At the start of the experiment
can you expect that in an hour and a bit you will almost certainly find
yourself being tortured or that you will almost certainly find yourself not
being tortured? Does it make any difference if instead of an hour the
interval between the two stages is a nanosecond?

Stathis Papaioannou
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