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> They are extinct, so supporting his hypothesis

Or they were hunted to death by organised groups of early humans.

Wales are probably only surviving because their environment is so foreign to humans.

Eg, Origins of the Human Predatory Pattern: The Transition to Large-Animal Exploitation by Early Hominins

https://www.journals.uchicago.edu/doi/10.1086/701477

They are extinct because in the game of size vs brains they lost. So this still supports their argument. Humans and human activity is part of the environment the same way as anything else. Humans were also here with cockroaches or horses but those are still around.

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