When and why did human brains decrease in size 3,000 years ago?

Discussion in 'Science and Technology' started by ipatent, Oct 22, 2021.

  1. ipatent


    When and why did human brains decrease in size 3,000 years ago?

    The researchers applied a change-point analysis to a dataset of 985 fossil and modern human crania. They found that human brains increased in size 2.1 million years ago and 1.5 million years ago, during the Pleistocene, but decreased in size around 3,000 years ago (Holocene), which is more recent than previous estimates.

    Brains use up a lot of energy, and smaller brains use less energy. The externalization of knowledge in human societies, thus needing less energy to store a lot of information as individuals, may have favored a decrease in brain size.

    "We propose that this decrease was due to increased reliance on collective intelligence, the idea that a group of people is smarter than the smartest person in the group, often called the 'wisdom of the crowds,'" added Traniello.
    Nobert likes this.
  2. maxinger


    This explained why in ancient times,
    humans were able to build the huge Egyptian pyramid, Stonehenge, Easter Island statues ...

    And why in modern times,
    humans with all the powerful tools, machines, and computers are unable to
    understand how those huge structures were built.

    Mystery solved !!!
  3. A group of people is smarter than the smartest person in the group...they never met our Congress. Then again, maybe they have.
    Nobert likes this.
  4. carrer


    Only 10 percent of our brain is being utilized. Got to tap the rest of it.
  5. Lots of info in here, if it can be believed. Guessing the guy worked at the Redstone Arsenal in Huntsville Alabama. I suggest this because of the remote viewing work said to be done at the facility.

    Earth's atmosphere use to have more oxygen and the ozone layer was much denser. We have been getting dumber and smaller for the last 50k years (my guess). Maybe less, maybe longer.

  6. It was 3,000 years ago that the first DemoCrap mutation emerged!
    thecoder likes this.
  7. That is certainly an interesting theory, but can they actually prove it?
  8. newwurldmn


    I think the oxygen was higher (full of o3) like 100 million years ago. That’s why mosquitos back then were the size of screw drivers.

    I bet the average human brain has gotten smaller because dumber people are able to procreate more. The human race is likely getting weaker every hundred years.
    Hari Seldon and Nobert like this.