CARTA: Domestication and Human Evolution - Robert Franciscus: Craniofacial Feminization in Evolution

Robert Franciscus (Univ of Iowa) explains that anatomically modern humans are recognized in the fossil record primarily by retraction and diminution of the facial skeleton compared to pre-modern “archaic” humans. He then describes a promising model for the advent of facial diminution, which suggests that anatomically modern humans represent a ‘self-domesticated’ species where selection for increased social tolerance led to growth and developmental alterations producing craniofacial “feminization,” which itself results in a phenotypic signal of reduced aggressiveness. Recorded on 10/10/2014. [6/2016] [Show ID: 28897]
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[@cpeithman999]

There's a lot of wisdom in periodically considering 21st Century Homo Sapiens in the fashion one analyzes domesticated animals (and even as one looks at wild animals in captivity). If "domestication" is mostly "adapting to live amongst humans", a string of adaptations which built towards our improved ability to live together might intuitively be very similiar to the adaptations which allow our animals to live with us.

[@billgates4916]

The oral posture has also an effect on face hight and protrusion, mouthbreathers get longer faces growing downwards and back

[@caitlinbayley1844]

Bill Gates exactly. Mew. This has made me wonder what we actually know about evolution, since few people acknowledge that we can change our face in our own lifetime.

[@nickbeard7046]

Glad to see we got some true intellectuals here who realize what has happened, what is happening

[@linh811]

@@nickbeard7046 intellectuals understand statistics and know of outliers

[@Rakscha-Sun]

A study of 2019 showed that high serotonin, at least artificially induced high serotonin by antidepressant) decreases empathy. Long before it was already clear that psychopathy is connected to a change in the MAO gene that to increases serotonin. At what point you will be willing to correct the idea that high serotonin reduces aggression?

[@slavicbean1272]

So basically, we all have domestication syndrome and now we're spreading it to make a social world with other animals?

[@pahkk]

흥미로운 설명 고맙습니다. 하지만 대본을 빠른 속도로 쭈욱 읽어가는 강의"방식" 이 맘에 안들어요. 전문가도 알아듣기 힘든 속도에요. 차라리 대화형으로 천천히 말해주면 더욱 좋았을텐데 아쉽네요.

[@daphnethunnissen]

I think it would be better if he wouldn't read it aloud but would memorize and present it without all these technical talk

[@scottjustscott3730]

There's a parallel with avian theropod dinosaurs losing their toothed snout and developing beaks imo.

[@lordraptor8414]

"Modern" people = sheeple. Mark my words, if society continues to reward and propogate drones who un-questioningly work their 9 to 5 jobs while penalizing the free spirited people of the world who do not enjoy domestication, then humanity is fucked.

[@fyoloswaggins5203]

we have no reason to be smart anymore and that's scary

[@marcverhaegen7943]

Beautiful video, but what prof.Franciscus tries to explain with domestication or feminisation (a Hineininterpretierung) can better be explained by the late-Pleistocene evolution from littoral erectus to more wading sapiens, google "coastal dispersal Pleistocene Homo PPT". H.erectus followed the Indian Ocean shores, where they dived for shellfish: pachyosteosclerosis & ear exostoses are only seen in slow & shallow-diving mammals - archaic Homo even reached islands far oversea such as Flores. Stone tools (sea-otter), larger brain (DHA), large lungs (diving), big nose & projecting face (emerging) etc. confirm this view. Better tools might have led to a shift from diving to wading, which made the projecting midface + large nose superfluous. The eyes - instead of in front of the brain - now evolved to lie under the frontal brain, to direct the eyes more downward, to look from above into the water (catching fishes with spears or nets?), the face flattened. This also explains our very long legs, esp.tibias (wading), narrower pelvis (less flaring iliac bones) etc. For a biological (instead of anthropocentric) view on ape & human evolution, google "Lucy was no human ancestor PPT".

[@helmeteye]

So maybe, we were neanderthal's pet?

[@davidnoone3254]

Loring Brace says we evolved out of Neanderthals.

[@ricardocruz392]

Hey I notice my mouth is way smaller from everybody , I noticed because I'm centennial. Super Modern.

[@luddity]

Or maybe you're Asian?

[@franklulatowskijr.6974]

So, as we domesticated dogs we domesticated ourselves.

[@OblateSpheroid]

Second then the first

[@elforeigner3260]

Less muscles in your face, less bone needed to hold them

[@shannalee2520]

My Great Pyrenees has more in common with a wolf than the dogs in this video. Are you saying she is not a dog?

[@linh811]

No she doesn't 🤣.

[@shannalee2520]

@@linh811 i can safely say you have never met my dog.

[@masterdeere]

So, who dosmeticated us?

[@loldidyoureally3246]

We did it accidentally by dropping grains and realizing that we could grow them and have an excess supply. That left more time to think because we werent spending our energy looking for food

[@dimelinlo9183]

Nature

[@codexox1]

mate selection . The Dutch became taller people because women dims taller men as attractive,

[@squatch545]

So this feminization process means at some point we started eating soy.

[@jara7ana]

do you study the servers? out going and in coming? now.

[@Toxicashellmonsanto]

The premise being that man follows a linear path of evolution, which is not proven, in fact there is more evidence against it than for it. So the entire hypothesis is built on a Darwinian base, a base that Darwin himself doubted. Man is domesticated, but it was from manipulation, just as man domesticated dogs.

[@Drift_x27]

toxic monsanto there is a theory that dogs were domesticated as a result of being able to coexist with humans. Using them to share food and ensure survival.

[@scottjustscott3730]

Evolution is anything but linear. The notion is counterintuitive. Unfortunately it's difficult to grasp for many.

[@vandpiben]

@@Drift_x27 its been in our culture to kill the bad dogs. Over time they just get domesticated.

[@padraig88]

How can wolves still exists if dogs 'evolved' from them?

[@chrimigules]

patrick gallant how can your cousins exist if you were born?

[@herrfriberger5]

Because there are many niches in nature. Evolution is driven by opportunism. That's why there are som many different kinds of birds, for instance.

[@jgdhjjdkgj1857]

Because we domesticated wolves by taking them as pups and raising them.

[@nathanhobson8263]

patrick gallant - its possible that only the more human-wary breeds of wolves now remain, while the less wary ones were identified as potentials for domestication, or whatever the people back then called the process.

[@jgdhjjdkgj1857]

Because people dont see the need in redomesticating the wolf, since its probably not very easy even with pups, why would we even do it? We already have domesticated wolves, in the form of everything from pugs and poodles (sadly) all the way to the german shepherds etc.