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A book I’m currently reading, Cognitive Pluralism, cites research suggesting that human infants as well as many non-human animals (particularly primates) are born with four “hard-coded” core reasoning systems:

  • A Core Object System which identifies cohesive and continuous objects (as opposed to say liquids or heaps), enables tracking of such objects, and causes us to expect that objects will follow some specific properties: they will preserve their boundaries, move as a unit, interact with one another only through contact, and be set into motion only when acted on through direct contact. Has some signature limitations, such that we can only attend to about 3-4 objects at the same time.
  • A Core Number System which allows for numerical comparisons, such as by saying that a set with thirty stimuli is larger than a set with ten. Unlike the core object system, the core number system is nonmodal and not limited to contiguous objects; it can compare the number of e.g. sounds or actions.
  • A Core Agency System that causes us to intuitively treat humans, animals, and other things exhibiting signs of agency as being different from objects, liquids, or heaps. Things that are classified as agents are expected to exhibit autonomous, goal-directed behavior; and they will activate social behavior, such as when an infant imitates their actions.
  • A Core Geometric System which represents space and environment according to geometric properties such as distance and angle, while ignoring non-geometric properties such as color and smell. Does things such as constructing perspective-invariant representations of geometric layouts, or predicting how objects will appear when turned around or look at from a different perspective.

Now one particularly intriguing hypothesis which the book mentioned was that the intuitive human belief in souls or consciousness continuing after death, may come from the Agent and Object systems having different classification criteria. In particular, objects are assumed to only move when acted upon, while agents are assumed to exhibit independent, goal-directed motion.

Apparently the psychologist Paul Bloom has proposed that seeing or thinking about a human causes us to perceive there being two entities in the same space: a body (object) and a soul (agent). While the book did not explicitly mention this, this would also explain the origin of many intuitions about free will and mind-body dualism. Under this model, the object system would classify the body as something that only moves when being ordered to by an external force, requiring an agent in the form of a mind/soul being the “unmoved mover” that initiates the movement. One could also speculate on this being the intuition that motivated Aristotle’s unmoved movers in the celestial spheres, to say nothing about all the different creation myths, if we have an inborn intuition for movement requiring an agent to set it going.

Also, as a fun implication: if you were to design an AI to have the same core reasoning systems, then it might also have an intuitive belief in free will, souls, and creators.

Further reading: Cognitive Pluralism cites Spelke & Kinzler (2007), Core Knowledge, in Developmental Science 10:1, as well as Paul Bloom’s 2004 book Descartes’ Baby: How the Science of Child Development Explains What Makes Us Human, which based on its title sounds absolutely fascinating and which I probably want to read soon.

Originally published at Kaj Sotala. You can comment here or there.

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