Vestigial Brain

Is the brain half empty or half full?

This one is for the evolutionists and theologians to discuss, I take no sides but am interested in the views.  I have heard throughout my life that humans only use half of their brain capacity.  I found this interesting from an evolutionary standpoint today.  If evolution favors the better suited species, what purpose does a brain capacity twice what is needed serve, especially when the capacity cannot easily be accessed in cases of trauma to the head, which would indicate a backup system?  Did humans with half the brain capacity once exist but did not pan out in the evolutionary cycle?  Is the extra brain capacity a vestigial hold over from a time when we used all of our brains until evolution decided we did not need so much or is their another purpose to that unused potential?  Could the unused portion have significant bearing on religious teachings or higher states of being that might blur the lines between science and religion?  Basically, my question is this “how can either side completely ignore the other when such a significant question is unresolved?”  Do we have a big lump of vestigial brain matter inside our skulls or are there astounding mysteries to be explored yet?

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4 thoughts on “Vestigial Brain

  1. Hhhmm, I’m not sure that’s true.

    National Geographic just did a piece on neuroscience (stunning photos, I love that magazine). Here’s an online link, though I’m not sure it is exactly what is presented in the magazine: http://ngm.nationalgeographic.com/2014/02/brain/zimmer-text

    Anyway, the brain is so complex, it will be a long time until we understand it completely. But as far as I can tell, it is not “half empty” – in any sense of that term.

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