[ExI] Simulating the brain
William Flynn Wallace
foozler83 at gmail.com
Wed Jul 19 18:28:52 UTC 2017
stathis or stuart wrote:
Furthermore as a psychiatrist, where would you draw the line between normal
behaviors (the observable correlates of mental states) and exceptional
ones? One standard
deviation, two? 6 sigma?
------------
There IS no line to be drawn. You are talking about qualitative
measurements, not quantitative. OK, there are a few objective tests, such
as the MMPI, where you can quantify, but that would never be used as the
only diagnostic bit.
The only real question when "Do you put a diagnostic label on this person?"
arises, is: are their behaviors and/or thoughts
significantly interfering with their daily lives, or impacting society,
their jobs, or family?"
It's like asking 'How smart is smart? IQ 120, 140, 160? Not use the IQ
tests at all? Or ....?'
bill w (who is glad to answer any psychiatric or psychological question
put to him - if he can)
On Wed, Jul 19, 2017 at 8:42 AM, Stathis Papaioannou <stathisp at gmail.com>
wrote:
>
> On Wed, 19 Jul 2017 at 6:54 pm, Stuart LaForge <avant at sollegro.com> wrote:
>
>> Stathis Papaionnou wrote:
>>
>> >Angular displacement of the body will have an effect on neurones, perhaps
>> >by stretching the cell membrane and hence altering the excitability
>> >threshold and the propagation of the action potential. An accurate model
>> of
>> >the brain should therefore take this parameter into account. However, at
>> >some level of resolution the effect will be swamped by noise. So it would
>> >be wasted effort to model angular displacement to 10 decimal places when
>> -
>> >again in order to be accurate - you would have to throw away 5 decimal
>> >places due to the thermal noise inherent in a biological system at body
>> >temperature.
>>
>> Yes, thermal noise would cause the underlying wavefunction to decohere
>> into one definite state but not until *after* the continuous probability
>> function had preselected those possible states, finite or countably
>> infinite, and assigned various probability masses to them.
>
>
> The continuous distribution (if that's what it fundamentally is) becomes
> effectively discrete once the error bars are taken into account.
>
> The moment that you admit that some mental states are more probable than
>> others, you open the door to allow infinity to influence your mind. You
>> can't have a normal distribution without infinity. Furthermore as a
>> psychiatrist, where would you draw the line between normal behaviors (the
>> observable correlates of mental states) and exceptional ones? One standard
>> deviation, two? 6 sigma?
>
>
> Every distribution, normal or otherwise, of any parameter ever considered
> has been effectively discrete, since every measuring instrument gives a
> discrete result. There are not usually arbitrary cutoffs in abnormal
> psychology but if there were that would also be discrete: 3.0 sigma on some
> test result, say.
>
> > >Human understanding of irrational numbers does not depend on writing out
>> > an
>> > >infinite non-repeating decimal.
>> >
>> > Yes. We have the mental capacity to mathematically manipulate infinity
>> and
>> > discern bona fide truths about infinity without resorting to infinite
>> > numbers of decimals or infinite memory. On the other hand, I don't
>> think a
>> > computer has any concept of infinity distinguishable from a stack
>> overflow
>> > error.
>>
>>
>> >A dog doesn't have much concept of infinity, but its brain is not that
>> that
>> >dissimilar to yours and mine. If we push the point, I don't think any
>> human
>> >can "really" grasp infinity and irrational numbers, even if if they can
>> >manipulate and utilise them as concepts, in the way a computer algebra
>> >system such as Wolfram Alpha can.
>>
>> Can dog a be conditioned to salivate at a sound of any arbitray frequency
>> of sound within its range of perception including a bell or silent
>> whistle? If so, the dog's mind is recognizing a specific frequency out of
>> an uncountably infinite range of possible frequencies. So it is processing
>> infinity even if it is not doing it abstractly or even delibrately.
>
>
> The dog would not be able to tell if the tone were digitally generated
> (with sufficient fidelity) or an analogue tone.
>
>> --
> Stathis Papaioannou
>
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