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Any anthropologist or scientist worth their salt knew this for years. Cooking meat is one of the main reasons fire was controlled, and anyone who didn't eat meat was usually for religious reasons or during a famine.

I'm just as appalled as anyone else when it comes to the ethical treatment of animals, but to deny that we didn't evolve to be omnivores despite overwhelming evidence is... well it's silly.

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That’s not a very effective argument for doing it now.

Whatever drove our ancestral evolution is no longer a major part of our environment. We selectively bred plants and animals, wiped out various diseases and created environmental pressure for others to change, and the development of preservatives and refrigeration and cheap long-distance travel means we can combine foods which our ancestors could never find in the same place at the same time.

Plus the whole 33 year life expectancy at birth/54 year life expectancy if you reached 15 in the Paleolithic.

Anthropologists are careful to call for ethical decisions based on evolutionnary arguments.

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