-[TODO: frustration cont'd ...]
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-At this, some extremely naïve novice students of historical mammology inquire: [TODO ...]
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-To which it is replied:
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-A few particularly naïve students inquire further: [TODO ...]
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-To which it is replied: there's _no reason whatsoever_ for evolution to select for that, _dummy_. What's wrong with you?
+Really, the typical west-valley ground squirrel and the typical east-valley tree squirrel wouldn't have been friends at all, if not for the tantalizing allure of exotic secrets. Thus, special cross-subspecies friendships tended to be successfully formed much less often than they were desired.