Introducing the brain: half a brain is just fine (Introduction)

by David Turell @, Sunday, March 22, 2020, 18:06 (104 days ago) @ dhw

dhw: I have just said that development - as opposed to conception - of the concept means providing more and more details of design, and now you are telling me that design requires deep thought and study. Yes, that is why I am suggesting that the brain expanded! And maybe in the past it also expanded through having to cope with the material production of something that had never existed before. The modern brain complexifies (but expands in sections) AS A RESULT of thought and study.(David’s bold)

DAVID: All we know and can rely upon is our brain has small enlargements with special uses, and shrunk 150 cc with heavy use. I keep repeating, your bold is the easy part, in my actual experience.

dhw: Why have you bolded production and ignored my reference to design?

Because, to repeat, I have the actual experience that once a design (concept) is created production is the easy part.

dhw: I suggest that once the brain stopped expanding, complexification took over and was so efficient that it resulted in shrinkage. What is your explanation?]

Of course, the same.

DAVID: The current brain at any stage of evolution always sees the information available. Conceiving of a new concept requires abstract thought in the design process.

dhw: Precisely. The new concept arises out of the information available. Then the implementation of the concept through design and manufacture makes new demands on the brain, which in former times resulted in expansion.

Why do you think implementation is so difficult?


DAVID: You want the effort to make a conceived artifact as the way to enlarge the brain. That has never been my experience. Design first, difficult. Producing easy.

dhw: You have forgotten that the concept comes first. I say it is conceived by the existing brain (materialist) or soul (dualist) using existing information. You refuse to say why the brain has to expand before the brain/soul can conceive the concept.

DAVID: What???!! God expands the brain to allow the new complex abstract thought to appear through use by the soul.

dhw: Which new complex abstract thought – the concept, or the design of the concept? Once more: in your dualistic world, the soul uses the brain to gather information and to implement its concepts. The concept in our example is to kill prey by throwing a sharp artefact from a distance. This is an abstract thought arising solely from the information that already exists. Once the dualist’s soul has conceived the concept, it uses the brain to design and manufacture the artefact. Why do you insist that your God had to expand the brain before the hunter could extrapolate his concept from existing information?

Because every enlarged brained fossil species has new artifacts found with it. Logically, they thought of it and created it .


DAVID: Based on my own experience with our brain, I am sure your idea is exactly backwards. You theory would only work if previous brains worked for the soul and an entirely different way than it does now. Concept difficult, production easy.

dhw: Why do you continue to ignore the development from concept to design?

I've not ignored it. I've explained what I have designed. I'm sure you have understood my concept that design is the tough part and producing the product much easier.

dhw: And why do you insist that the complexification and limited expansion of the modern brain (which has finished expanding for whatever reason, though I suggest anatomical practicality) constitutes an entirely different way of working compared to limited complexification and greater expansion at a time when brains were considerably smaller than they are now and therefore did not have the capacity to design and manufacture certain new concepts?

We can only study how our brain works. We are all stuck with the fact that larger brained fossil designed and made the new artifact, as above. You theory reverses the simple logicical conclusion.


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