This is precisely why it is impossible to exactly clone a mind. Because you
are always trying to hit a moving target. That was included in what I meant
by saying the histories would not be the same.
Saying somebody is the 'same' person from day to day is just loose common
speech using an imprecise definition which isn't really germane here.
As you point out everybody's thoughts and states of mind are always
On Thursday, January 9, 2014 5:01:48 PM UTC-5, Brent wrote:
> On 1/9/2014 1:15 PM, LizR wrote:
>> I understand very well that's what the 'yes dr.' scenario is but it's
>> an impossibility to be exactly 'me' for the reasons I pointed out. You
>> can't come up with a hypothetical scenario which isn't actually physically
>> possible and make a correct deduction about reality on that basis.
>> The no-cloning theorem means that if the correct substitution level is
> the quantum level (or below), then it is physically impossible for us to
> create a digital copy of a brain that creates the same state of
> consciousness, in which case the above objection is valid.
> However, it isn't clear that this *is *the substitution level. Max
> Tegmark has suggested that the brain is essentially a classical computer
> (rather than quantum) which may in principle put the level above the
> quantum. If he's right, then making a copy of a brain at the right level
> becomes possible, albeit beyond present technology, and thought experiments
> may legitimately use that idea (because it's possible in principle).
> Personally I don't agree, I think that any copy made above the quantum
> level isn't *guaranteed* to be the same, while a quantum recreation is
> by the laws of physics to be identical*. So assuming the substitution
> level is the quantum level cuts out a host of possible objections.
> But a lot depends on what you mean by "the same". As Terren points out, no
> one is exactly the same from minute-to-minute or day-to-day. They are
> similar enough that we denominate them the same person, even Gabby
> Gifford is still "the same person" to a pretty good approximation.
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