Evolution of the Brain - Revision history

193.16.224.14 at 17:39, 16 February 2025

2025-02-16T17:39:36Z

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	* In the human brain, language is the window to our inner simulation. Language is the interface to our mental world.		* In the human brain, language is the window to our inner simulation. Language is the interface to our mental world.
	* If there is anything that truly makes humans unique, it is that the mind is no longer singular but is tethered to others through a long history of accumulated ideas.		* If there is anything that truly makes humans unique, it is that the mind is no longer singular but is tethered to others through a long history of accumulated ideas.
			[[Category:Consciousness]]

193.16.224.14 at 17:30, 16 February 2025

2025-02-16T17:30:26Z

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			Note: to be reduced from rough notes

	== 600m ya - Bilaterians and Steering ==		== 600m ya - Bilaterians and Steering ==

Rob: /* ChatGPT */

2025-02-11T18:05:46Z

ChatGPT

← Older revision		Revision as of 18:05, 11 February 2025
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	=== ChatGPT ===		=== ChatGPT ===
			* Both LLMs and the neocortical areas for language seem to be engaging in prediction, generalizing past experiences and applying them to new sentences, and guessing what comes next, though more is happening in your brain than merely the automatic prediction of words.
			* The foundation of language learning is not sequence learning but the tethering of symbols to components of a child's already present inner simulation.
			* The neocortex evolved long before words, already wired to render a simulated world that captures an incredibly vast and accurate set of physical rules and attributes of the actual world.
			* The human brain contains both a language prediction system and an inner simulation.
			* The intertwining of mentalizing and language is ubiquitous. Wernicke's area is right in the middle of the primate mentalizing regions.
			* We are capable of puppeteering other minds because language is, it seems, built right on top of a direct window to our inner simulation. Hearing sentences directly and automatically triggers specific mental imagery. This is why if someone is saying something that upsets us, we cannot simply "not listen"; we must cover our ears, otherwise the words directly trigger simulations whether we like it or not.
			* By predicting not just the answer but also the next step in reasoning about the answer, an LLM begins to exhibit emergent properties of thinking.
			* In the human brain, language is the window to our inner simulation. Language is the interface to our mental world.
			* If there is anything that truly makes humans unique, it is that the mind is no longer singular but is tethered to others through a long history of accumulated ideas.

Rob: /* The Perfect Storm */

2025-02-11T17:55:08Z

The Perfect Storm

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 === The Perfect Storm ===
-* Around 2.5m ya something mysterious happened with the human brain rapidly becoming over three times larger
+* Around 2.5m ya something mysterious happened with the human brain rapidly becoming over three times larger.
 === ChatGPT ===

Rob: /* The Perfect Storm */

2025-02-10T20:34:34Z

The Perfect Storm

← Older revision		Revision as of 20:34, 10 February 2025
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	=== The Perfect Storm ===		=== The Perfect Storm ===
			* Around 2.5m ya something mysterious happened with the human brain rapidly becoming over three times larger

	=== ChatGPT ===		=== ChatGPT ===

Rob: /* Language in the Brain */

2025-02-10T20:32:27Z

Language in the Brain

← Older revision		Revision as of 20:32, 10 February 2025
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	** We have a second separate system, supporting voluntary control of facial muscles that is controlled by the neocortex.		** We have a second separate system, supporting voluntary control of facial muscles that is controlled by the neocortex.
	* The newer language system needs to be taught - if a child goes long enough without being taught language, he or she will be unable to acquire it later in life. Unlike innate emotional expressions, features of language differ greatly across cultures. And indeed a human baby born without any neocortex will still express these emotions in the usual way but will never speak.		* The newer language system needs to be taught - if a child goes long enough without being taught language, he or she will be unable to acquire it later in life. Unlike innate emotional expressions, features of language differ greatly across cultures. And indeed a human baby born without any neocortex will still express these emotions in the usual way but will never speak.
			* A hardwired tendency toward gestural and vocal turn-taking seems to be the platform on which language is built.
			* By nine months, babies show joint attention to objects. In contrast, chimps show no interest in ensuring someone else attends to the same object they do. The more joint attention expressed by an infant at the age of one year, the larger will be her vocabulary 12 months later.
			* Humans may have evolved a unique hardwired instinct to ask questions to inquire about the inner simulations of others. It isn't Broca's or Wernicke's areas that are new, but rather the underlying learning program that repurposed them for language. There is not a single region but rather a curriculum that forces a complex network of regions to work together.

	=== The Perfect Storm ===		=== The Perfect Storm ===

	=== ChatGPT ===		=== ChatGPT ===

Rob: /* Language in the Brain */

2025-02-10T18:03:29Z

Language in the Brain

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	=== Language in the Brain ===		=== Language in the Brain ===
			* Broca's area supports the production of speech and writing.
			* Wernicke's area supports the understanding of speech and reading.
			* The human neocortex has unique control of the vocal cords, surely an adaptation for using verbal language.
			* Language emerges from specific regions in the brain and is contained in a subnetwork almost always found on the left side of the neocortex.
			* Language is a specific and independent skill that evolution wove into our brains.
			* In other primates, these language areas are present in the neocortex, but have nothing to do with communication.
			* Emotional expression emerge from a system entirely separate from language:
			** Other primates have only a single emotional-expression system located in the amygdala and brainstem. Human laughs, cries, and scowls are evolutionary remnants of the system from which ape hoots and gestures emerge.
			** We have a second separate system, supporting voluntary control of facial muscles that is controlled by the neocortex.
			* The newer language system needs to be taught - if a child goes long enough without being taught language, he or she will be unable to acquire it later in life. Unlike innate emotional expressions, features of language differ greatly across cultures. And indeed a human baby born without any neocortex will still express these emotions in the usual way but will never speak.

	=== The Perfect Storm ===		=== The Perfect Storm ===

	=== ChatGPT ===		=== ChatGPT ===

Rob: /* Language and Sharing Internal Simulations */

2025-02-09T18:39:50Z

Language and Sharing Internal Simulations

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	== 100k ya - Humans and Speech ==		== 100k ya - Humans and Speech ==
	=== Language and ~~Sharing~~ Internal Simulations ===		=== Language for Sharing, Accumulating, and Complexifying Internal Simulations ===
	* The "Great Ape Dictionary" - chronicles almost 100 sounds and gestures.		* The "Great Ape Dictionary" - chronicles almost 100 sounds and gestures.
	* No other animals use declarative labels or symbols - "That is a cow". Other animals may make a sound meaning "Predator", but this has an implied imperative "Run"		* No other animals use declarative labels or symbols - "That is a cow". Other animals may make a sound meaning "Predator", but this has an implied imperative "Run"

Rob at 18:39, 9 February 2025

2025-02-09T18:39:16Z

@@ Line 300: / Line 300: @@
 == 100k ya - Humans and Speech  ==
-=== The Search for Human Uniqueness ===
+=== Language and Sharing Internal Simulations ===
 === Language in the Brain ===
 === The Perfect Storm ===
 === ChatGPT ===

Rob at 18:18, 9 February 2025

2025-02-09T18:18:10Z

← Older revision		Revision as of 18:18, 9 February 2025
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	* Theory of mind helps you to manage your reputation and hide your transgressions. It isn't about managing hungry predators or inaccessible prey, but rather about the subtler and far more cutting dangers of politics.		* Theory of mind helps you to manage your reputation and hide your transgressions. It isn't about managing hungry predators or inaccessible prey, but rather about the subtler and far more cutting dangers of politics.

	=== ~~Tools~~, Teaching, and ~~Imitation~~ ===		=== Simulation in Imitation, Teaching, and Anticipating the Future ===
	* Primate tool use is more sophisticated than in other animals. Chimps exhibit over twenty different tool-using behaviors and actively manufacture their tools.		* Primate tool use is more sophisticated than in other animals. Chimps exhibit over twenty different tool-using behaviors and actively manufacture their tools.
	* The premotor and motor areas in a monkey activate when they perform specific fine motor skills but also when they watch others do them.		* The premotor and motor areas in a monkey activate when they perform specific fine motor skills but also when they watch others do them.
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	* Theory of mind enabled our ancestors to "actively teach", students can identify the intent of a complex skill and differentiate between the intentional and unintentional movements of experts, filtering out extraneous movements and extracting the essence of a skill.		* Theory of mind enabled our ancestors to "actively teach", students can identify the intent of a complex skill and differentiate between the intentional and unintentional movements of experts, filtering out extraneous movements and extracting the essence of a skill.
	* Theory of mind may have emerged for politicking and then been repurposed for imitation learning.		* Theory of mind may have emerged for politicking and then been repurposed for imitation learning.

	~~=== Modeling the Future ===~~
	* The social-brain hypothesis is rivaled by the ecological-brain hypothesis - that it was the frugivore diet of early primates that drove the rapid expansion of their brains.		* The social-brain hypothesis is rivaled by the ecological-brain hypothesis - that it was the frugivore diet of early primates that drove the rapid expansion of their brains.
	* Anticipating future needs may be another application of theory of mind - we can infer the intent of mind - our own or another's - in a different situation from our current one. People make similar types of mistakes in tasks of theory of mind and of anticipating future needs.		* Anticipating future needs may be another application of theory of mind - we can infer the intent of mind - our own or another's - in a different situation from our current one. People make similar types of mistakes in tasks of theory of mind and of anticipating future needs.