Shrinking Brain in Humans

Scientists are alarmed by shrinking of the human brain

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Love the comment : maybe because we are becoming less aggressive ? Have they looked at the all the conflicts around the world? Modern society has become too sit on the sofa watch garbage which for the most part is stupid, targeting the lowest of ethics oversexed and mind-numbing or sitting at a computer for 8 hours, and the trolls who sit in a darken room and stare at multiple screens for days on end. if the zombies ever attack----humankind may not survive and I hate to say this -- a concentrated - one goal species LOL

Given that (a) yes, brain size makes a demonstrable difference in current human intelligence.
And given that (b) it's unclear whether our brains are getting smaller or whether more of the smaller humans are breeding in cities. (which appears to be the case since cities are genetic and IQ sinks). And given that (c) we have been selecting for immaturity for 10K years (paedomorphic selection). And given that (d) women generally possess superior verbal skills and weaker modeling skills despite smaller brains.

I would hypothesize that all of the above are driving down AVERAGE brain size.
I would suggest we will saw additional paedomorphic selection domestication up and until the period of 'Peak Human' which I suspect was around 1500 bc.
And that at present we are seeing a rapid expansion of dysgenic classes, tilting the data dramatically.
Unfortunately I suspect that the initial shift caused by the adoption of general rules (science) rather than rules of specific cases (recipes), as well as the reduction in the malnutrition at the bottom (left) of the curve, means that the downward shift in genetic iq and brain size from underclass reproduction is being hidden by the flynn effect. But in real terms, on average we are getting smaller, more verbal brains, and a lot more dumb people breeding.

It is widely scientifically accepted theory that our brains grew particularly large due to the new predominant food source once our ancestors were caught in geological and climate change of East Africa. Previously predominantly plant eating omnivores in dense jungle (like other apes), our ancestors encountered life in now dry savanna, with very little fruit and mainly grass or grass-eaters available. Homo Robustus made evolutionary choice of becoming grass eater. Brain did not grow in that species and it got extinct. Our ancestors chose to eat more grass-eaters. Becoming predominantly meat-eating omnivores. By all scientific accounts a positive feedback loop established from this that led to our advance: eating more meat->growing larger brain->using larger brain to get even more meat->even larger and more capable brain...
What happened about 10000 years ago? Agriculture. Food processing (before that time humans not only couldn't collect enough say, grains from the wild to cover the energy spent in the effort but neither than or now can we eat it without processing). Move to food based more in grains than meat. Certain large amount of proteins in the diet is required for having a larger brain. Now we have different challenges such brain might address but the core of the new change is in the diet, food, not lack of evolutionary challenge and selection.

Peter Harrap's picture

Observe how creatures with small brains do things we are unable to do. Birds fly, bees fly, even though theoretically OUR brainy scientists say they should not be able to! There are insects with dozens of legs, their brains can separately control-think about it!- and creatures who have more sense faculties than us. Can you see a mouse from a mile up in the sky!?

So the idea from our brains that the size of our brains matters is somewhat dickheaded, if you’ll pardon my French, or is it Bulgarian?

 

Once upon a time Earth gravitation was smaller than it is now due to the young age of our planet earth and its higher electric and geomagnetic charge within. Everything was easier than it appears to us now - the walking of the people our ancestors the giants, the stone constructions like the pyramids and the circle sanctuaries built everywhere around the planet.
Even the life of the giants was longer than ours due to the smaller earth gravitation. Our ancestors the Nephilims were granted by their God Father Ra with long life (900 -1000 years) as it is narrated in the Bible.
Our ancestors were very wise enlightened people and they had their intuition and inner senses much more developped than we have them today.
If you want to immagine how life of our ancestors was once upon a time you better see once again the film Avatar. Our ancestors had big and very well developed beautiful bodies, smaller heads and intuitive wisdom of no comparison nowadays.
The changing Earth gravitation is the reason for the cranial trepanation, cranial deformation, blood letting medical practices of the ancient Bulgarians who spread all over the globe after the Bibical flood in Black Sea in around 5500 BC. Ancient ancestors had to coope with the changing earth conditions as well. They are humans with some slight diferences from the today human cranes - instead of three plates on top they had two plates. And this peculiarity has an explanation - they were giants, nephilims and their heads were easier to be born by a giant mother as it is today for mothers to give birth. You remember what the Bible says: after Adam and Eve were thrown out of the paradise woman was sentenced by God to give birth with difficulty.
That explains also why our giant ancestors had to build pyramids and to dig holes in the mountain rocks on special geomagnetic spots on Earth. They used to do that for milenia in Bulgarian mountains as well - our country is famous with its ancient miraculous mountains and their sanctuaries. On these holy spots Ancient Bulgarians used to perform spiritual rituals today called Mysteries and to energise their bodies & minds with the earth geomagnetism.

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