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Why are our brains shrinking?

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11–20 of 199 posts

Re: Why are our brains shrinking?

#11

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Domesticated by whom? How?

Re: Why are our brains shrinking?

#12
post #10

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Yes, people give away their private data for small conveniences, much like how pets give away their natural lives in wilderness for a guaranteed meal and a warm house.

What a bizarre comparison. Any animal would make the same 'choice'.

Re: Why are our brains shrinking?

#13
post #10

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Yes, people give away their private data for small conveniences, much like how pets give away their natural lives in wilderness for a guaranteed meal and a warm house.

70,000 years ago people were running around in groups of 50-200 people killing mammoths. Private data has nothing to do with this, that’s only happened in the past 20 years and there isn’t a generation that has lived their whole lives with smartphones that are adults yet. We have no idea what effect they’ll have on evolution

Re: Why are our brains shrinking?

#14

Easy: we've offloaded some of our information storage to external media, i.e. writing.

From the article it indicates this shrinkage began 70K years ago, or 65K years before writing. In addition, vast majority of the population didn't know how to read or write until 100-150 years ago.

I definitely move through life seemingly in a mechanical fashion. I suspect in the wild I would be alert, all attention, always anticipating, planning.

Re: Why are our brains shrinking?

#15

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Domesticated by whom? How?

[deleted]

Re: Why are our brains shrinking?

#16

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Domesticated by whom? How?

By ourselves and the structures we created. Agriculture, etc.

Re: Why are our brains shrinking?

#17
Whales have brains which physically are much, much larger than a human brain; size does not directly equate to intelligence. Note also brains are extremely expensive, physiologically, to maintain. It may simply be we are evolving to be more efficient.

Re: Why are our brains shrinking?

#18

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Domesticated by whom? How?

It's possible for an animal to domesticate itself. This is one of the theories for how wolves were domesticated. It's not that humans did anything special to domesticate them but that wolves started hanging around humans and eating the scraps that were left over at campfires and other human habitation sites. Eventually the less fearful and tame wolves became human companions. Once people realized they could hang out with wolves they started actively breeding more tamer variants.

The same is true for humans. The process is obviously slightly more complicated because unlike wolves people have more influence on their environment but it's undeniable that humans are now domestic animals. No modern human can survive in the wilderness and this process is accelerating. We are now, for all intents and purposes, dependent on mechanical tools and technology for our continued existence. Feeding 8B people is impossible without industrial farming and agricultural techniques, e.g. Haber-Bosch. [1]

1: https://www.sciencedirect.com/topics/engineering/haber-bosch...

Re: Why are our brains shrinking?

#20

Because we are being domesticated. Domesticated animals are all dumber than their wild counterparts. Every wild animal that ends up being domesticated ends up with a smaller brain. I should rephrase and maybe say that this doesn't necessarily mean the animals get dumber but they definitely change in the process of domestication and a smaller brain is one of those adaptations. [1] > The reduced amount of white matter…

Domesticated by whom? How?

Ourselves. The conveniences we strive for.
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