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My solution for that problem that science is unable to solve is logical enough.
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Nope. Wrong. The size of the human brain increased because early hominids began to consume a protein-heavy diet which included meat. This permitted the brain to grow large enough to accomodate habitual bipedalism and abstraction. This is also why Chimpanzees and Bonobos, the two Apes for whom meat is the largest component of their diet, are the Apes which most closely mimic human behavior.
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A human woman has trouble giving birth because of our larger head size (relative to our body size), causing the woman pain and sometimes death.
I doubt if a Gollia suffers the same kinds of labor pains as do human females, and it is the enlarged head size that causes that difference.
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Utter ballocks. Human -brains- are larger/heavier in relation to body-size. Have you ever -seen- a baby Gorilla? Their heads are nearly as outsized as our own. The reason women experiance so much pain is because, unlike Gorillas and people in other parts of the world, Western women give birth lying down. Female physiology is designed for delivery in a semi-upright position, with gravity to help out. The death from childbirth which you reference usually results or resulted from either blood-loss accompanying a torn uterine lining or vaginal canal, or to infection in the aftermath of delivery. Unless the baby is Hydrocephalic, head-size is not an issue unless the woman is extremely small (ie young).
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The thinking brain was perhaps the end result of diets where they ate mind expanding mushrooms (whatever?) and that triggered the growth of glands that produced the imagination and other human qualities of thinking.
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I have no idea where you pulled this dreck from. Again, the "thinking brain" was the result of a shift to a protein-heavy diet. Get your bloody facts straight.
You also seem to have -zero- understanding of how Evolution works. Physical events
which do not kill the victim have zero bearing on Evolution. You're thinking like Lysenko, for Christ's sake! Nobody is going to evolve three-jointed arms if you go around breaking everyone's arm for a few generations. Evolution occurs when a random addition, deletion, or shift in genes causes a physical change, ie a mutation. If the mutation is beneficial, it will increase (however slightly) that individual's chances of survival. If the individual organism lives long enough to reproduce (thereby perpetuating at least the -possibility- that the mutation might be repeated), Evolution is happening. If the mutation is beneficial enough, eventually it is simply bred into the population, as with Sickle Cell Anemia.
I would suggest that you actually know what you're talking about before posting things of this kind.