From: Nick Bostrom (bostrom@ndirect.co.uk)
Date: Sun Apr 04 1999 - 20:21:30 MDT
Hal wrote:
> Simply put, it is meaningless to ask whether a replay is conscious; it
> is meaningless even to ask whether a second run of a conscious program
> further instantiates the consciousness. There is no subjective fact of
> the matter to resolve, and so there is no objective problem which can
> be solved, either.
I see a couple of problems with this view (I'm not saying it is
wrong). First, ethically: does it matter if one instantiates a
suffering-state more times than necessary? Second, epistemologically,
given observer self-selection (i.e. that you should consider yourself
as if you were a randomly selected observer) then it makes a
difference whether multiply instanciated programs should be counted
more than once. Also consider the slightly weird effect that two very
slightly distinct programs give rise to two subjects of experience,
but remove the slight discrepancy, and voila, there is no fact of the
matter any longer as to whether there is one or two of them. (It's
not hard to think of an example that combines this with the
epistemological concern.)
Nick Bostrom
http://www.hedweb.com/nickb n.bostrom@lse.ac.uk
Department of Philosophy, Logic and Scientific Method
London School of Economics
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