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The idea that a piece of meat is more nutritious than the same mass in plant matter is not in conflict with the idea that an ecosystem can feed more vegetarians than omni/carnivores.

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Except in the winter in temperate climates when you can't harvest enough calories or protein to survive on a vegetarian diet

Are you claiming that vegetarians have no access to the global logistics services or storage of food? This is ridiculous.

The parent comments were about civilization collapse and hunter-gatherers, so I was staying on-topic

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