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I came up with a theory for why humans have chins and other animals don't.

No other presentation forms besides video available. Sorry if my accent is jarring to listen to, English isn't my first language and I'm not well adjusted to speaking it.

Not really a "physics guy" either. Receptive to feedback.

https://www.youtube.com/watch?v=8By13koVrns
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>>16830768
not gonna watch but I can already tell you theory is bullshit
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>>16830768
Don't dogs have chins?
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>>16830768
I'm not interested in the subject, however the video is very well made.
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>>16830768
u need to stop mumbling and learn to enunciate yo shit nigga
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Watched about 40 seconds and got bored. You seem to have good sources and know what you're talking about, I'd recommend you use some of the video editing techniques to retain audience, monotone voice-over and simple transitions won't keep anyone watching in the age of over stimulation
Your English seems fine to me but I'm a beaner yt consoomer who is used to hearing all kind of accents
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>>16830768
God is a chad and we're made in His image
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>>16830768
Amazing Animal Fact Time:
Snakes have rubberband chins to expand to eat more bigger foods.
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>>16830768
Sexual selection. Whatever females found sex many hundreds millennia ago included having large protruding bony mass under one’s mouth. Same reason why male birds will have large tails or colorful coats.
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>>16830768
spandrels?
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fuck youtube slop just write a blog man
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>>16830997
>I'd recommend you use some of the video editing techniques to retain audience, monotone voice-over and simple transitions won't keep anyone watching in the age of over stimulation
It is pretty insane how it is these days. Originally I set out to make just a crude video since the theory isn't super fleshed out. Like I point out I came up with everything featured in the video in 2020 and haven't made any progress since then.

However since people so are used to constant stimulation and overproduction I had to add some stuff like a dynamic background so that there's something constantly moving in the picture (also it prevents from someone taking the video and cutting it up without being detectable, although I don't really care in this case, just a good idea in general).

Either way my original point about just making a crude presentation is still valid. I could try to actually model these forces and verify the theory that way, in which case a proper presentation would be justified. I might still try to do that but I don't mind other people doing it on my behalf
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>>16830768
they do the infirmation is stored in the x chromosome
in some other chromosome with parameters your bottom jaw is extended and your face is not extended when you develop
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>>16830768
I think the simple answer is just angles.
As we lean back to be more up right, and leg lock extended and lengthened, a fall is much more threatening so there is greater need to look down and make out where our feet would land. Long snout and protruding teeth blocking the view are pushed and bend inwards and the vertical teeth root and mandible that used to be under the chin is now part of the face in front. The mandible also needs to make room to tuck into the neck.
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>>16830768
>>16831189
op this is the only person in this thread with brains, your statement gets falsified by just looking at modern people and their chins. Chins are getting smaller and smaller, we see more people with nonexistent internal mandibles.

Chin has 0 functionality, its purely sexual selection. Protruding chin is a sign that you have well developed mandilble, its a sexually dimorphic trait which gives you more bitches
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The video was fine because I don't have adhd.
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>>16831689
OP here and there are many arguments that seemingly ”falsify” my theory and yet they don’t. I even originally compiled some of them for the video but cut it all out, hence ”short overview”. That is one of them.

Many people have small/weak chins nowadays mainly because of poor oral posture and temporalis disengagement.

It’s possible that natural selection began favoring strong chins and that factors in the way you described but why did it first emerge as a feature and why was it considered favorable? If it’s a mechanical byproduct of larger head size and brains, with less jaw projection, it would signify evolutionary advancement and be attractive due to that
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Left a comment for you op
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Even doe I might've left a crude comment but the video is extremely well made
The way of explaining, the editing, everything is unironically very good. Will watch more if op posts more
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>>16831735
>Many people have small/weak chins nowdays mainly becaues of poor oral posture
cope, mike mew bullshit is an absolute pseudoscience.

This statement literally has 0 base, how did you find out that pre-historic people had their tongue glued to their upper palate.
>natural selection favoring...
there is no natural selection in my argument, i am talking about sexual selection. Same happened with our beards, beards have 0 mechanical functionality, its purely sexual dimorphic trait which was favored by the opposite sex. Infact beards damage your survival rate, cause beards are highly greasy and full of microbes and bacterias. Your immune system fights those microbes that you swallow everytime you open your mouth. It's basically saying "look i can have living fucking greasy bacterias on my mouth and not die have kids with me"

You are making a logical fallacy by assuming that all evolutionary traits should benefit your survival.
Chin has 0 mechanical functionality and no your fucking jaw is not getting smaller because of the oral posture, we literally see how peoples browridge and chin grows when they take anabolic steroids, chin is purely sexually dimorphic trait hence why men have larger chins. Its fucking sexual selection, i liked the video but i am so disappointed cause all your argument is basically pseudoscience 0 evidence "oral posture"
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>>16831783
Mewing isn’t pseudoscience. The concrete evidence is
1) prehistoric remains, crooked teeth were virtually nonexistent before humans developed agriculture and soft foods. Hard chewing promotes proper oral posture. Breastfeeding times have shortened from ancient times and it teaches to swallow correctly. Overall detachment from ancestral habits and movement patterns further leads to incomplete physical development, plus nowadays people don’t spontaneously release traumatic fascial constrictions. It’s been observed that animals do this and humans used to.
2) Monkeys have been observed to maintain proper oral posture and a study demonstrated that their skulls start collapsing when they don’t

As for chins growing when taking steroids and all that, I’ve seen weak chinned people on steroids, I’ve seen weak chinned men with naturally high test levels. You’d think they would’ve figured it out if it was that simple



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