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European Neanderthals probably had 15% more neurons than modern Homo Sapiens, based on brain volume.

We're still here, so bigger brains alone might not be the reason.

If I am not mistaken hasn't there been studies that show intelligence more about brain wrinkles than volume? Hence the memes about smooth brains (implying someone is dumb).

This is how I understood it also.

Imagine packing 50,000 elephants inside a football stadium.

Humans have a unique ability to scale up a network of brains without complete hell breaking lose.

Although 50,000 humans inside a football stadium are not 50,000 times smarter than a single human. Indeed taken as a single entity, its intelligence is probably less than the average person. Collective intelligence likely peaks in the single digit number of coordinators and drops off steeply beyond a few dozen.

If anything mobs are dumber than any one person in the mob.

Are you comparing 50k elephants with hell? I bet our "ability to scale up a network of brains" is infinitely more dangerous than that.

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