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I agree with jamesqf. I would add that IRL we observe such isolations determined by mountains, valleys, canyonds, deserts, rivers, and dense forest; and these do not have to be particularly remark...
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I agree with jamesqf. I would add that IRL we observe such isolations determined by mountains, valleys, canyonds, deserts, rivers, and dense forest; and these do not have to be particularly remark...