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Cooking Stimulated Big Leap In Human Cognition

Hugh Pickens writes "For a long time, humans were pretty dumb, doing little but make 'the same very boring stone tools for almost 2 million years,' says Philipp Khaitovich of the Partner Institute for Computational Biology in Shanghai. Then, 150,000 years ago, our big brains suddenly got smart. We started innovating. We tried different materials. We started creating art and maybe even religion. To understand what caused the cognitive spurt, researchers examined chemical brain processes known to have changed in the past 200,000 years. Comparing apes and humans, they found the most robust differences were for processes involved in energy metabolism. The finding suggests that increased access to calories spurred our cognitive advances, although definitive claims of causation are premature. In most animals, the gut needs a lot of energy to grind out nourishment from food sources. But cooking, by breaking down fibers and making nutrients more readily available, is a way of processing food outside the body. Eating (mostly) cooked meals would have lessened the energy needs of our digestion systems, thereby freeing up calories for our brains. Today, humans have relatively small digestive systems and allocate around 20% of their total energy to the brain, compared to approximately 13% for non-human primates and 2-8% for other vertebrates. While other theories for the brain's cognitive spurt have not been ruled out, the finding sheds light on what made us, as Khaitovich put it, 'so strange compared to other animals.'"

5 of 473 comments (clear)

  1. That explains it by Anonymous Coward · · Score: -1, Troll

    That explains why my wife is both stupid and a rotten cook. I married her for the good bud and b.j.s Now that she has cut me off I see the truth.

  2. Our Creativity by wideBlueSkies · · Score: 0, Troll

    From the post:
    >> We started creating art and maybe even religion

    I read that as 'We started creating art and maybe even fiction'.

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    Huh?
  3. Chicken or the Egg? by v(*_*)vvvv · · Score: 1, Troll

    Which cave man came up with the idea in the first place? How did he/she get smart enough to learn how to cook?!

  4. Re:[OFFTOPIC] by Nutria · · Score: -1, Troll

    public humiliation, prison for life, torture, and mutilation seems far superior ways to make braking the law scarier.

    Prison for life? The number of people who regularly commit crimes that are thusly punished is proof that life sentences aren't very scary.

    You are, though, correct that public humiliation, torture and mutilation would scare off many young offenders. Drive drunk and get pilloried, having people throw rotten fruit at you in the town square.. Possession With Intent? Pilloried, naked and caned, naked, in the town square, etc... Rape someone, cut off the penis. Petty theft? Cut off some or all of a finger. Grand theft? Cut off a hand. The death penalty shouldn't be excluded. The more gruesome the method of killing, the more painful should be your execution.

    And executions should be televised, split-screen with bloody pictures from the crime scene, and family pics of the murdered.

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    "I don't know, therefore Aliens" Wafflebox1
  5. Re:[OFFTOPIC] by ChrisMP1 · · Score: 0, Troll

    Are you talking about a death for a death? So if a man kills a wife and 2 children the law should make the husband kill the murderer's family? Or are you attempting to kill him thrice?

    Wow you're an ass. You just said that for the sake of starting an argument. Do you really think for one moment he actually believes that a triple murderer should be killed thrice or have his family killed? Put a little thought into your arguments, or go back into your mom's comfy basement, safe from reality.

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