On 02-04-2021 22:24, 'Brent Meeker' via Everything List wrote:
On 4/2/2021 1:10 PM, Evgenii Rudnyi wrote:
Am 02.04.2021 um 20:27 schrieb Brent Meeker:
On 4/1/2021 11:39 PM, Evgenii Rudnyi wrote:
Only philosophically naive neuroscientists reject realism .
I am sorry, I have not understood your answer. Do you mean that a
person sees red flowers directly? In the same physical location?
I don't know what you mean by "directly".
I mean direct vs. indirect realism:
https://en.wikipedia.org/wiki/Direct_and_indirect_realism
We have a theory of how people see red flowers. It involves photons
and brain processes andred flowers that are in a location. I'm
pretty sure you're familiar with this theory. Do you reject it?
Do you mean the picture from Gray's book? It seems that you reject it,
not me. I accept this picture and I am just waiting until you accept
it.
Or you mean that the virtual world that a person sees is similar to
the physical world?
Do you agree with the virtual world theory or do you reject it?
I don't know what "the virtual world theory" is.
The theory you are talking about finishes by excitation of neurons in
the brain. Hence we must say that what a person sees is the brain's
reconstruction of the external world. So the person sees some virtual
world made by the brain, hence the name "the virtual world theory".
By that interpretation every theory is a theory about a virtual world,
so the word "virtual" is empty. The whole point of any theory or
model is that it's about something else, F=ma doesn't express a theory
about m. Notice that neurons are a theoretical construct as well as
flowers.
Brent
We can make theories about the real world and validate those in
experiments, but the brain's neural circuitry has implemented a virtual
reality that has evolved to match some important aspects of the natural
world, allowing our ancestors to survive. Certain concepts that we
experience like the experience of seeing the color red, being angry etc.
then only have a meaning at the level of the algorithm the brain is
running. While you can still reduce whatever is happening in the brain
in terms of the fundamental physical processes, to completely capture
the experience, you always need to construct the algorithm from the
fundamental physical processes.
Saibal
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