I don't know anything about the brain, or really what the discussion in this thread is about but here is an imgurguement anyway.
A change in brain surface area over time in the case of DH’s study (60Mya-Present) would conclude with us bowing to our Cetacean overlords.
Check out an artists impression of the wrinkles
Since 5Mya the early Homo family brain has it in the bag with four times the mass over that period and around a 50% increase in body mass. Afaik this is the greatest change in EQ known, but our brains are not proportionally any wrinklier than our ape cousins.
Comparing wrinkles to understand high-technology doesn’t get you far.
Look at how long we had big brains without technology, even as homo sapien sapien.
Division of labour between and within lobes has changed a lot over this period and it would be interesting to do FMRI scans on every sentient being that has existed, sadly the neurons are now broken up and making their way through the carbon cycle,
reverse engineering doesn’t seem practical.
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Originally Posted by news article on population density theory
Some thought boosts in brain power or advances in language led to modern human behavior, which includes the crafting of abstract and realistic art, body decoration, musical instruments and hunting and trapping technologies.
But our big brains didn't seem to bear any cultural fruit until much later. In fact, archaeological evidence of art and technology beyond basic stone tools doesn't appear until about 90,000 years ago in sub-Saharan Africa. There, remnants of modern human behavior disappeared around 65,000 years ago and then re-emerged about 40,000 years ago.
"In Europe and western Asia this advanced technology and behavior explodes around 45,000 years ago when humans arrive there, but doesn't appear in eastern and southern Asia and Australia until much later, despite a human presence," said study team member Stephen Shennan of the University College London's Institute of Archaeology.
"Our paper proposes a new model for why modern human behavior started at different times in different regions of the world, why it disappeared in some places before coming back, and why in all cases it occurred more than 100,000 years after modern humans first appeared,"
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Here’s another image of something something something
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Originally Posted by Johnny Richter
On a scale of 1-10, how euphoric would you say you are, dent?
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Which numbers correspond to euphoria/dysphoria?