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Originally posted by Macrotus
Can you say sarcastic analogy? Again of course you can't make sense of that too can you?
I'm not. I'm stating the obvious. And if humans born with forward looking binocular vision and having a pair of canine teeth can't see the obvious what they truly are, an omnivore, then I can't help you...
Originally posted by Johnmike
I like Duality. I hope nothing I said came off as being against vegetarians, but rather, against vegetarians who propagandize vegetarianism and start spreading rumors to scare people out of eating meat. If you believe in a vegetarian diet, admit that it isn't completely natural, and then supplement it properly, you're fine, and probably more healthy that the people around you eating meat every day. I just can't stand the rabid, dishonest vegans who spread urban legends to give them a sort of offensive moral high ground.
He held up a well-thumbed copy of Aiello’s book and said, “Her CV is so long, it’s hard to know where to start.” But two seminal ideas stand out, said Lieberman. One is that in evolutionary terms, big human brains — with enormous energy requirements — are inversely proportional to gut size.
This idea — called the Expensive Tissue Hypothesis (ETH) in Aiello’s co-authored 1992 paper — argues that around 1.5 million years ago early humans began to eat more meat, a compact, high-energy source of calories that does not require a large intestinal system.
A second seminal idea posited by Aiello and another colleague is that increased brain size meant higher reproductive costs for females — who, over time, compensated in part by increasing in size at a greater rate than males of the genus Homo. (Homo erectus females had a 64 percent larger body mass than earlier hominids; males of the species — though still larger than females — were larger than their earlier male counterparts by only 45 percent.)
Around 1.5 million years ago there was “a lot going on” in evolutionary terms, said Aiello. Hominid habitat changed, along with the size of early human craniums (larger) and jaws (smaller).
But growing brain size presented a metabolic problem. A gram of brain tissue takes 20 times more energy to grow and maintain than a gram of tissue from the kidney, heart, or liver, she said. Gut tissue is metabolically expensive too — so as brains grew gut sizes shrank.
It’s likely that meat eating “made it possible for humans to evolve a larger brain size,” said Aiello. Early human ancestors probably consumed more animal foods — termites and small mammals – than the 2 percent of carnivorous caloric intake associated with chimpanzees.
The social implications of increased meat eating were interesting, said Aiellio. In most primates, there’s no food sharing between females and offspring, she said. But the difficulty of getting meat led to cooperative food sharing among early humans, strengthening the bond between a female and her offspring.
Originally posted by Rockpuck
Stupid vegetarians and their self righteous crusade... I would like to BBQ a Vegetarian.