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0 pointsnopinsight1y ago0 comments

The brain is predisposed to learn those skills. Early childhood experiences are necessary to complete the training. Perhaps that could be likened to post-training. It's not a one-to-one comparison but a rather loose analogy which I didn't make it precise because it is not the key point of the argument.

Maybe evolution could be better thought of as neural architecture search combined with some pretraining. Evidence suggests we are prebuilt with "core knowledge" by the time we're born [1].

See: Summary of cool research gained from clever & benign experiments with babies here:

[1] Core knowledge. Elizabeth S. Spelke and Katherine D. Kinzler. https://www.harvardlds.org/wp-content/uploads/2017/01/Spelke...

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vanviegen1y ago

> The brain is predisposed to learn those skills.

Learning to walk doesn't seem to be particularly easy, having observed the process with my own children. No easier than riding a bike or skating, for which our brains are probably not 'predisposed'.

nopinsightOP1y ago

Walking is indeed a complex skill. Yet some animals walk minutes after birth. Human babies are most likely born premature due to the large brain and related physical constraints.

Young children learn to bike or skate at an older age after they have acquired basic physical skills.

Check out the reference to Core Knowledge above. There are things young infants know or are predisposed to know from birth.

HumanOstrich1y ago

The brain has developed, through evolution, very specific and organized structures that allow us to learn language and reading skills. If you have a genetic defect that causes those structures to be faulty or missing, you will have severe developmental problems.

That seems like a decent example of pretraining through evolution.

tesch11y ago

But maybe it's something more like general symbolic manipulation, and not specifically the sounds or structure of language. Reading is fairly new and unlikely to have had much if any evolutionary pressure in many populations who are now quite literate. Same seems true for music. Maybe the hardware is actually more general and adaptable and not just for language?

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eru1y ago

> No easier than riding a bike or skating, for which our brains are probably not 'predisposed'.

What makes you think so? Humans came up with biking and skating, because they were easy enough for us to master with the hardware we had.

puffybuf1y ago

I think of evolution as unassisted learning where agents compete with the each other for limited resources. Over time they get better and better at surviving by passing on genes. It never ends of course.

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