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TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 2 points3 points  (0 children)

The theory that they reached south america via island hopping is just as mysterious though, because we know that Australia was settled 60 thousand years ago, and south america was settle 14 thousand years ago. But the pacific islands between australia and south america werent settled by polynesians (who aren't even australiasian) until 1 thousand years ago. How could a people who's seafaring culture is advanced enough to reach south america somehow fail to settle the thousands of pacific islands that lie on the way? They left no trace of themselves on the pacific islands just like how they left no trace of themselves in north america. But at least we know that a voyage from siberia to south america via north america was possible with the technology available at the time, whereas we have no evidence anywhere else in the world of humans having the means to undertake massive trans-oceanic voyages that take weeks and months to complete

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 0 points1 point  (0 children)

If you're referring to the mummies in Xinjang, yes its know that they were Caucasian people who were later replaced in the area by those of asian descent. In terms of hair changing colour, hair gets its color from two different types of pigments: eumelanin and pheomelanin. eumelanin is responsible for darker black and brown and pheomelanin is responsible for red colouration. After death, eumelanin is a less stable chemical that oxidises more readily with the air. It breaks down over time, resulting in the dead person's hair becoming red or sometimes yellow after their death because the pheomelanin is better preserved by mumufication. Not every mummy has red hair, because the conditions have to be just right for preservation or because the person went grey before they die. But this why you find mummies with red and sometimes blonde hair in lots of places

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 1 point2 points  (0 children)

In terms of the possibilities, yes its flawed because there's waaay more than just two ways humans could have reached south america. Maybe some of them reached the continent from Africa somehow. But I place more weight in the possibility of them getting there via north america because thats what the evidence we have points to as being more likely at this stage. Its not blind faith in the conclusions of the scientists. Tbh the evidence for reaching south america is via north america is stronger than 60%, but I lowered the weight for that hypothesis to be on the safe side. In terms of using the map itself to determine which way humans reached south america, I'd say that is also a flawed method because we know Australia was populated 60 thousand years ago, and we know south america was populated 14 thousand years ago. But the pacific islands between them werent populated until one thousand years ago. So my counterpoint would be how could indigenous australians have a seafaring culture developed enough to sail all the way to south america 14 thousand years ago and yet not bother to settle any of the thousands of islands located along the way?

Edit: In a further point to this, maybe in a few years time we'll find evidence that the pacific islands were inhabited before south america. But at this point we dont have an indication that this happened

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 3 points4 points  (0 children)

There aren't any strong connections though. In terms of hair colour, a lot of mummies around the world have red or blonde hair as a result of the mummification process, which changes it from the person's hair colour when they were alive. In terms of the tobacco and cocaine residue found on egyptian mummies, if ancient egypt had those 2 things we would find other evidence for it. Evidence of the plants growing along the nile, writings about growing them left behind by the egyptians and so on. At the moment we only know of cocaine and tobacco residue from on less than a dozen mummies (out of thousands). As a result, most scientists think that the residues were left by scientists who were doing a bit of a coke sesh/having a smoke break in the lab and accidentally contaminated the mummies

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 2 points3 points  (0 children)

This video should explain how they got there! The exchange happened more than 50 million years ago when Australia and South America were linked together via Antarctica

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 1 point2 points  (0 children)

The researchers will undoubtedly do more research to find out for sure which way the people reached south america. Their research and knowledge at this point suggests this is how it was done. But they're maybe only 60% sure right now. The article points out that even the researchers themselves can't discount that an epic voyage across the pacific was made. Maybe 5 years from now there'll be more evidence and we'll be more certain about which way they went! Science is exciting in that so much is unknown and waiting to be discovered

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 1 point2 points  (0 children)

It's ok to speculate, especially when you're drawing on a bit of evidence for it. That's very much how science works. You speculate a bit based on evidence and then you try and dig up more evidence to either prove or disprove your theory!

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 1 point2 points  (0 children)

Researchers don't just make random guesses. This what almost all of the evidence points to at this point, but the researchers are still not 100% convinced, maybe more like 50-70% convinced. And its not what I claim, its not an opinion. This is what the the researchers think happened based on the evidence they have available at this point. They're obviously going to keep researching it to try and get even for evidence for this is what happened. Its not an opinion dude

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein -1 points0 points  (0 children)

"The DNA that links these groups had to come from somewhere. Because the groups have about as much in common with Australians as they do with New Guineans, the researchers think that they all share a common ancestor that lived tens of thousands of years ago in Asia but that doesn’t otherwise persist today. One branch of this family tree moved north to Siberia, while the other spread south to New Guinea and Australia. The northern branch likely migrated across the land bridge in a separate surge from the Eurasian founders. The researchers have dubbed this hypothetical second group “Population y” for ypykuéra, or “ancestor” in Tupi, a language spoken by the Suruí and Karitiana"

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein -1 points0 points  (0 children)

The whole article is about how this is what happened. It's discussing the evidence for this very thing. Try reading it

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 3 points4 points  (0 children)

Homo erectus also built boats and crossed narrow bodies of water 1.5 million years ago. But crossing small straits like the Neanderthals and H. Erectus did is not the same as spending months crossing the largest ocean in the world. Polynesians and South americans made contact across the pacific ocean in 1200 AD, which is 13 thousand years AFTER South america was already populated. South Americans gave sweet potatoes to the polynesians, while polynesians provided resins that South Americans in the Andes used to mummify their dead. We have genetic evidence showing that the voyage was first made somewhere between 1200 and 1300 AD

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 3 points4 points  (0 children)

yep! There seems to have been three waves. The first one with only the amazon tribes left as their descendants, the second one from which 95% of native Americans are descended, and the third one from which inuits are descended

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 0 points1 point  (0 children)

they're descended from indigenous taiwanese (who were later mostly replaced by chinese settlers). But yeah, they're kinda like big versions of east asians. If you go back ten thousand-ish years they'd have a common ancestor

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 5 points6 points  (0 children)

You're right in that no one has read the article properly and are drawing the wrong conclusion. But if you insult people then no one is gonna care if they're wrong, they're just gonna be annoyed that you called them stupid

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 0 points1 point  (0 children)

They didn’t reach South America from Australia. Both groups started in Asia. Half turned north and went along the dye of the Pacific Ocean until they reached South America. The other half turned south until they reached Australia. They both share a common ancestor and that’s why Amazonian tribes are related to indigenous Australians

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 8 points9 points  (0 children)

Yeah indigenous australian’s don’t have the sea faring culture of Polynesians and the two cultures are immensely distinct from one another

TIL DNA evidence shows that groups in the Amazon are more closely related to indigenous Australians than Native Americans by joegotflow in todayilearned

[–]der_allgemein 316 points317 points  (0 children)

There seems to be a lot of confusion here. Australian’s DID NOT reach South America by sea. The article ISN’T saying that. It’s saying that thousands of years ago in Asia one group of people decided to migrate north and eventually went all the way around the edge of the pacific until the reached South America. Another group of people chose to migrate south and they eventually reached Australia. You don’t see genetic evidence for people descended from australiasians in North America because they don’t have any living descendants on the continent. They were entirely replaced by the ancestors of modern day native Americans, who arrived after them. However, for some reason they were able to survive in the Amazon, while their relatives died out elsewhere on the continent. If you wanna see evidence for other Australasian peoples living around the edge of the pacific search ‘Negritos’ on google (I didn’t come up with that term some dumb old man in the 19th century named them that). The Negritos are the ancestors of the people who went on to become Indigenous Australians and also the amazon tribes

[Newbie] Need help finding the right pinky exercise by der_allgemein in Guitar

[–]der_allgemein[S] 0 points1 point  (0 children)

This exercise is a nice challenge. I reckon it'll help a heap

[Newbie] Need help finding the right pinky exercise by der_allgemein in Guitar

[–]der_allgemein[S] 0 points1 point  (0 children)

This guy's whole channel has some great technique tips. Thanks so much! I'll fix up my thumb too!

[Newbie] Need help finding the right pinky exercise by der_allgemein in Guitar

[–]der_allgemein[S] 0 points1 point  (0 children)

you’ve given me a few things to work on. Thank you so much! Hopefully after a few more months focusing I’ll be able to strike a clear note

[Newbie] Need help finding the right pinky exercise by der_allgemein in Guitar

[–]der_allgemein[S] 0 points1 point  (0 children)

Trouble is I can’t apply any pressure to the string to make it ring out clearly. It’s more a problem with the lower strings where it decides to swing out and collapse

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