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The idea about human evolution that stumps creationists

ecofarm said:
Try biology 101.
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Introduction to Human Evolution | The Smithsonian Institution's Human Origins Program

Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.
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Introduction to Human Evolution | The Smithsonian Institution's Human ...
humanorigins.si.edu/education/introduction-human-evolution

Humans and the great apes (large apes) of Africa -- chimpanzees (including bonobos, or so-called “pygmy chimpanzees”) and gorillas -- share a common ancestor that lived between 8 and 6 million years ago. Humans first evolved in Africa, and much of human evolution occurred on that continent.
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You disagree with this. Show your evidence or show you idiocy.
 
ecofarm said:
https://www.sciencedaily.com/releases/2017/10/171012090957.htm
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Among living primates, humans are most closely related to apes, which include the lesser apes (gibbons) and the great apes (chimpanzees, gorillas, and orangutans). These "hominoids" emerged and diversified during the Miocene, between about 23 million to 5 million years ago. Because fossils are so scarce, researchers do not know what the last common ancestors of living apes and humans looked like or where they originated.
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Read your own links before you post them.

You have shown yourself up.

Rank idiocy after rank idiocy.
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ecofarm said:
Humans split from modern apes at ~lemur. Apes going semiaquatic is not necessarily indicative of human ancestry.
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This is most certainly not the consensus view... it seems weird to me to see something so left field asserted with such confidence but no discussion of evidence....

I’m as certain as I am of anything with evolution that this is just wrong. There’s really good genomic evidence grouping us closely with the other apes (last common ancestor with chimps and bonobos between 6 and 9 million years ago), less closely with old world monkeys (last common ancestor 25 million years ago), far less closely with new world monkeys (last common ancestor 40? Million years ago - going from memory) and prosimians much farther back.

For example, we share the exact same copy paste mutation that gave us tri-color vision with all the old world monkeys, but none of the new world monkeys. The one leaf-eating specialist new world monkey that developed tri-color vision did so with a demonstrably different mutation.

The family trees we can make by examining the complete genomes (the most recent, and I think best, line of evidence for evolution) all group us an equal distance from our two nearest relatives: chimps and bonobos (which split from each other after they split from us).

Where is this idea that our last common ancestor with the apes was a prosimian coming from?


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ecofarm said:
When rodents were the highest order and largest mammal on Earth, one had a particularly large brain cavity. Could be coincidence, we know brain size is not related to intelligence, but let's say we found us. That rat became a proto simian and then split into all the primates, each evolving separately and one of them us.
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Actually, brain size is related to intelligence, but it requires an asterisk! There was a recent paper that debunked this notion pretty solidly.

The prevailing idea was that you had to map brain size to body size because of some supposed linear increase in the amount of brain space needed to mentally map the body. But this was just a conjecture for trying to figure out why whales and mammals aren’t way smarter than us (though everyone agrees they are smart, few people think they’re in the same class as us despite much larger brains).

What the scientists in this new paper did was look at brain structure and found that primates pack way more neurons in per cubic inch. And it’s actually the number of neurons and synapses that matter. So there is a qualitative difference between a primate brain and a whale brain.

But once you account for that difference, brain size is the predictor of intelligence and it doesn’t need to be adjusted for body size. A bigger primate brain makes a smarter primate, and a bigger cetacean brain makes a smarter cetacean, but to compare cetacean brains and primate brains you have to count neurons.




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ecofarm said:
https://www.sciencedaily.com/releases/2017/10/171012090957.htm
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Is this your evidence? This article does not say anything like what you’ve been saying. This isn’t talking about the last common ancestor of humans and chimps, or even humans and great apes, but the last common ancestor of all the apes, including humans, chimps, gorillas, orangutans bonobos, and all the gibbons and siamangs (the ‘lesser apes’).

The article even has a family tree showing the relationships, and it’s not all straight lines shooting off a ancestral lemur. You can look at the lines and see humans share a more recent common ancestor with chimps than they do with gorillas than they do with gibbons... follow the lines.

I can’t tell if you just read the headline or if you just didn’t understand what you read, but this paper does not back the theory you’ve been asserting over and over.

I understand that humans didn’t ‘evolve from chimps’ - we have a common ancestor with chimps. We didn’t evolve from monkeys, we have a common ancestor with monkeys. But our last common ancestor with chimps is way more recent than our last common ancestor with monkeys, as this article you posted shows.


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DarthPedant said:
Is this your evidence? This article does not say anything like what you’ve been saying. This isn’t talking about the last common ancestor of humans and chimps, or even humans and great apes, but the last common ancestor of all the apes, including humans, chimps, gorillas, orangutans bonobos, and all the gibbons and siamangs (the ‘lesser apes’).
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Last common ancestor with apes is lemur, not apes. The terms common ancestor and evolutionary divergence are being conflated.
 
ecofarm said:
Last common ancestor with apes is lemur, not apes. The terms common ancestor and evolutionary divergence are being conflated.
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You love to assert this over and over but you never give any evidence. I cited some specific evidence from genomics. I could go into greater detail on that, but I don’t get the impression you care about evidence.

The one link you sent did not support your claim even a little bit, but had a chart saying exactly what I’ve been saying.

If anyone is conflating anything, it’s not me.


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