On 10 Jul 2014, at 03:22, meekerdb wrote:
On 7/9/2014 5:15 PM, LizR wrote:
On 10 July 2014 11:44, meekerdb <meeke...@verizon.net> wrote:
It's saying yes, an artificial brain can maintain my consciousness
*by interacting with my environment in the same way my natural
brain did*.
By doing everything your natural brain did, in fact. That is to
say, if the input is the same and the starting state is the same,
it will experience the same consciousness your natural brain would
have experienced.
As already pointed out, it's possible the duplication may have to
include your environment - e.g. in the teleporter experiment it may
be necessary to cut and paste the interior of the teleporter, which
for the sake of argument could be a sealed box like Shcrodinger's
cat's. (Or it could be a sphere with a radius the size of your age
in light years.) That doesn't make any difference to the argument,
however.
But I think ultimately it does. If you have do include the
environment in the computation (and Bruno has said maybe you do,
it's just a matter of "level") then I think it makes a metaphysical
difference. Going back to my example of the simulated aircraft; if
we simulate the aircraft in CFD then the meaning the variables
(lift, drag,...) come from our physical world. But if we simulate a
whole world, including the aircraft, so those variables have their
meaning relative to the simulated world, then there is really no
sense in saying it's a simulation. In other words if you simulate
*all* the physics, then you haven't gotten rid of the physical
world, you've just created a separate world with it's own physics.
But if you can simulate the whole physical reality, then it a
simulation among many variants in arithmetic, and physics will be
reduced, by UDA, to a statistic on a non computable set of
computations, and a priori this imposes some "non Turing emulable"
aspects in physics. They might be *only* the non computable (indeed)
quantum indeterminacy, and in this case the quantum indetermlinacy
would the universal Turing machine FPI. That's the kind of thing we
can test (and crasily enough we get already the quantization making
such test already successful, but an infinity of others tests are
awaiting us.
Bruno
Brent
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