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Teeth, race, and intelligence.

Teeth, race, and intelligence.
May 16, 2013, 01:52:15 PM
Philippe Rushton noted blacks having more protruding teeth and jaws

Teeth are further back for whites, and even more so for Asians.

Usually the larger the teeth, the smaller the cranium.

in the rare times when you see a white person with huge teeth and a huge cranium, they have a primitive appearance, probable neanderthal admixture.

anybody thought about this before? I hardly imagine the jaws and teeth are merely a superficial aspect of race.

not to mention jaws are related to the airway, which might explain why blacks never developed receding jaws, they needed more oxygen to maintain physical strength and speed.  having protruding teeth leaves a lot of room for the tongue such that the airway is never compromised.

Re: Teeth, race, and intelligence.
May 16, 2013, 02:24:45 PM
Maybe I don't understand what is meant by a "protruding jaw," but it would seem to me that whites have larger jaws and chins than blacks.  This kinda stuff is absolutely not my forte, but I would say over the past year or so I got kind of interested in skulls, less from any sort of scientific sense and more in an "aesthetic" sense.  So all my observations are very very amateurish.  I really don't read any sort of literature about this, but I just observe what I see in day to day life.  Take a look at pro athletes, the white guys always have bigger chins/jaws than their black counterparts.  Maybe the biggest difference I notice is not so much the jaw, but the chin.  Blacks rarely have much of a chin.  Take a look at that NFL player that fought in the Post 9/11 War, Pat Tillman.  Have you ever seen anybody but a white guy with a chin and jaw like that?

Re: Teeth, race, and intelligence.
May 16, 2013, 03:00:59 PM
Franz Boas said the old 19th century skull measurements showing differences were all fake. Therefore we're all the same and anyone who says otherwise needs to shut up. 86% of anthropologists agree. And they got to keep their jobs too.

Re: Teeth, race, and intelligence.
May 16, 2013, 04:49:12 PM
Maybe I don't understand what is meant by a "protruding jaw," but it would seem to me that whites have larger jaws and chins than blacks.  This kinda stuff is absolutely not my forte, but I would say over the past year or so I got kind of interested in skulls, less from any sort of scientific sense and more in an "aesthetic" sense.  So all my observations are very very amateurish.  I really don't read any sort of literature about this, but I just observe what I see in day to day life.  Take a look at pro athletes, the white guys always have bigger chins/jaws than their black counterparts.  Maybe the biggest difference I notice is not so much the jaw, but the chin.  Blacks rarely have much of a chin.  Take a look at that NFL player that fought in the Post 9/11 War, Pat Tillman.  Have you ever seen anybody but a white guy with a chin and jaw like that?

I think what you notice on white people is angular chins and jaws.

But basically what i'm getting at is that black people never have receded lower jaws in profile, even if their jaw is less angular. and they have protruding teeth and maxillas, partly responsiblle for the ape-like appearance.



Jay Z is an example



 you can tell that their teeth protrude, it shows in how the skin just barely stretches over them.



The reason this likely disappeared with whites and asians is that huge jaws and teeth compromises other things.

Australian Aborigines of course have the biggest maxillas, teeth and jaws out of everybody, and the lowest IQ






Re: Teeth, race, and intelligence.
May 16, 2013, 04:50:46 PM
Franz Boas said the old 19th century skull measurements showing differences were all fake. Therefore we're all the same and anyone who says otherwise needs to shut up. 86% of anthropologists agree. And they got to keep their jobs too.
Orthodontists treat their black patients differently, for what it's worth

Re: Teeth, race, and intelligence.
May 16, 2013, 08:24:53 PM
Not every difference has an adaptational reason, but even so; why would blacks need more oxygen to maintain physical performance compared to other races? The brain is an extreme consumer of resources, including oxygen, and in fact cannot break down glucose for energy without it, unlike other tissue which can in some conditions. It is extremely sensitive to drops in the oxygen saturation of the blood. Also, how would protruding teeth prevent airway compromise even if there is more room? There is plenty of room anyway, compromise is more likely to be from the tongue falling back into the throat (when unconscious), a relatively common occurance that would not be related to space anteriorly.

That doesnt mean this is superficial (I doubt it is), but the reductive reasoning of pure adaptation verges on silliness. Of course, with this being a mostly taboo area, the best we will get are probably these speculative biotruths for now.

The worst example of this fallacious reasoning is that gay people were more likely to be protective of the offspring of siblings and become soldiers/warriors as that is the only way they could protect their genes. Believe it or not, I have seen that repeated plenty of times.

Re: Teeth, race, and intelligence.
May 16, 2013, 08:46:22 PM
Thinking has never caused me to gasp in more oxygen, whereas physical exertion has, especially combat.
Experience would indicate that muscles require far more oxygen than brains.

Re: Teeth, race, and intelligence.
May 16, 2013, 10:38:43 PM
Not every difference has an adaptational reason, but even so; why would blacks need more oxygen to maintain physical performance compared to other races? The brain is an extreme consumer of resources, including oxygen, and in fact cannot break down glucose for energy without it, unlike other tissue which can in some conditions. It is extremely sensitive to drops in the oxygen saturation of the blood. Also, how would protruding teeth prevent airway compromise even if there is more room? There is plenty of room anyway, compromise is more likely to be from the tongue falling back into the throat (when unconscious), a relatively common occurance that would not be related to space anteriorly.

That doesnt mean this is superficial (I doubt it is), but the reductive reasoning of pure adaptation verges on silliness. Of course, with this being a mostly taboo area, the best we will get are probably these speculative biotruths for now.

The worst example of this fallacious reasoning is that gay people were more likely to be protective of the offspring of siblings and become soldiers/warriors as that is the only way they could protect their genes. Believe it or not, I have seen that repeated plenty of times.
of course this is just in the speculative stage for now. an idea to play with.
The Jaws affect the airway, and the spine, and ultimately your physical performance. Any TMJ specialist will tell you about it. people who were mouth breathers as kids and didn't develop their jaws and teeth properly become deficient in both athleticism and academic performance. This is a very informative book.



Black people never have bad posture. They're always standing up straight with a forward jaw a straight neck and a lifted chin. Perhaps as they have had little pressure to evolve higher intelligence, all of the oxygen goes towards building them up physically. I don't know. They didn't grow the jaw specifically to survive in Africa, the jaw decreased from the previous hominids and it just remained that size for them.

I'm mainly just confused at why the teeth shifted back for white people and Asians, following Out of Africa theory. Does a huge jaw use up too much energy? Too much bone mass? And also why has this always happened even as we gradually moved up from being apes.
Smallest brain = massive jaw, and then it kept getting smaller and smaller as cranium size increased. 

Re: Teeth, race, and intelligence.
May 16, 2013, 11:33:58 PM
TMJ specialist? Are you referring to the alternative medicine quackery which ascribes every medical issue imaginable to disorders of the jaw? Looking up this book brings me to http://www.smilepage.com/ which advocates `Real Alternative Dentistry` and the unique health benefits (usual quack language) of functional jaw orthopaedics (a real thing [Edit: but almost always a quack warning]). Just the cover hints at a link between hypertension and the jaw, but even looking that up just takes you to Dr. Page`s website.

Thinking has never caused me to gasp in more oxygen, whereas physical exertion has, especially combat.
Experience would indicate that muscles require far more oxygen than brains.

If you see it a different way; no matter how much physical work you do, the body will never divert blood from the brain. It has a dedicated, always on supply, because it is always on itself. The comparison doesnt make much sense. Your arms get sore after repeated use of their muscle, does your heart (also muscle), get sore too from constant beating? Also, is thinking (as `work`) equivalent to physical work? Skeletal muscle doesnt need to be at its top capacity all the time, you gasp as a response specific to situations that require it to be used (in response to hormones, waste products from energy generating processes in the muscle etc). The brain will always get its cut of oxygen no matter what other parts of your body need, so part of that gasping is indeed for the brain`s sake.

Re: Teeth, race, and intelligence.
May 17, 2013, 12:10:58 AM
Fair enough. It makes sense. So does my take on it, if you're neolithic, like me.
Vexorg wonder why when him do crossword puzzle, him not gasp.
Zegvog tell him not think so much...

Re: Teeth, race, and intelligence.
May 17, 2013, 04:57:22 PM
A better approach! Thats the problem of sciency stuff, too many words...