Big brain evolution: changes in sapiens skull shape;addendum (Evolution)

by David Turell @, Saturday, March 10, 2018, 18:53 (275 days ago) @ dhw

dhw: According to dualists, the s/s/c and not the prefrontal cortex does the thinking, and so it makes no sense for a dualist to say that the s/s/c can’t THINK without the prefrontal cortex.

DAVID: I agree, but in life the area where the s/s/c is focused is the frontal cortex. I am my s/s/c but can only work with it through the frontal cortex.

dhw: Your immaterial self (s/s/c) does not work with your immaterial self (s/s/c)! In dualism your s/s/c “works” with the material world through the material brain. The s/s/c does the thinking and the material brain provides information and does the implementing, as you keep agreeing and then disagreeing.

Your definition of dualism in not mine which is why we keep arguing. In life the brain and the s/s/c are inextricably intertwined and work together. I shape my personality and the characteristics from the blank slate at birth using my living brain. The s/s/c IS blank at birth with limiting potentialities in genes and nurture. After age 25 the s/s/c's structure will guide further adaptations throughout life. The s/s/c in life and death at its basis a quantum mechanism, just as the universe (reality) does.

dhw: But if it is the pfc that is the source of autonomous thought, then you are a materialist, though you think you are a dualist. (Dualist view: the s/s/c thinks; the brain provides information and gives material form to concepts.)

dhw: Dualists separate s/s/c and brain, using NDE's as evidence, which means that the s/s/c does not depend on the brain for its ability to THINK.

This is your dualist concept, not mine. I have no philosophic training and have presented my own thinking: in life the brain is a computer and the s/s/c the software. In death the s/s/c is operating on its own and I doubt any new concepts, just communication with other souls:

DAVID: NDE's offer no evidence that new conceptualization occurs. The NDE'r observes and wishes to stay. I don't think the s/s/c in the afterlife invents new theories. It can only exist as it was in life.

Conceptualizing is only one aspect of the s/s/c's thinking capacity. The discussion concerns the source of thought, which covers conceptualization, emotion, memory, decision-making, judgement and every other immaterial aspect of the self/soul. But I too would very much doubt if during an immaterial afterlife there was any need for it to conceive of objects that require a brain to give them material form. ...Our current subject is your materialistic claim that the s/s/c can’t THINK without the brain, even though it THINKS without a brain in the afterlife you believe in.

Answered above. The s/s/c functions in two ways in the two different circumstances.

dhw: If intelligence survives the death of the brain, it is absurd to say that it “springs from” the ability to use the brain. According to dualism, intelligence is what USES the brain, it is not the product of its use of the brain!

DAVID: If your point is true why do different brains in structure have different IQ's as in Einstein?

dhw: Everybody’s brain is different. Everybody’s s/s/c is different. I myself do not know if the structure of the brain determines intelligence. If, however, you believe the s/s/c is the source of immaterial intelligence (and conceptualization and every other immaterial element of your self), then please answer your own question. You are the dualist. I would say your question implies evidence for materialism.

Einstein's unusual brain allowed his brilliance. The s/s/c can develop in conceptualization only as far as the complexity of his brain allows. The s/s/c concepts are immaterial but their complexity requires a material brain's capacity to allow more complex thought. Your brain and mine are not constructed for an IQ of 90.

dhw: Your personality IS your self/soul, and you ARE your personality. Yes, it uses the brain throughout its development, and yes indeed, consciousness is the hard problem but, as you keep agreeing and then trying to disagree, the s/s/c (c = consciousness) IS the thinking you, and remains the thinking you in brainless NDEs. And so once again: it makes no sense to claim that the s/s/c can’t think without a functioning brain. “I think, therefore I am” is the whole basis of Descartes’ separation of mind and body. He does not say, “I have a prefrontal cortex, and therefore I am.”

Descartes did not know current research. You are completely ignoring my concept of the duality. It does not fit your neat philosophic summary which dos not fit what NDE's tell us, presuming quantum mechanics is involved. The s/s/c must have two different mechanism in life and death. Nothing else fits. Part of the solution to the issue is understanding quantum reality. That is why I introduced quantum theory to these discussions years ago.

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