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  • That's a shoe, not a tricorn hat. Obviously a tricorn hat would be a subpar defense.

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  • JessieL: That's a shoe, not a tricorn hat. Obviously a tricorn hat would be a subpar defense.

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    How many corns does a boot have, hmmm? Zero. Clearly inferior.
  • Made the mistake of RTA.  It contains a response to my critque of subby's headline and leaves me with nothing to argue.
  • > The protective phenotypes hypothesis suggests that animals with physical or chemical traits that confer protection-such as armor, spines, shells or venom-have slower aging and greater longevity. The team documented that these protective traits do, indeed, enable animals to age more slowly and, in the case of physical protection, live much longer for their size than those without protective phenotypes.

    This is hardly a new idea.

    So, porcupines should be long lived?

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527635/
    Rodents for comparative aging studies: from mice to beavers
    2008

    Long-lived rodents are protected from predators through various means. Tree squirrels and flying squirrels live high above the ground. Porcupines are large, and are covered with quills. Beavers are also large and spend most of their life in or near the water in cleverly constructed protective lodges. Naked mole-rats live in deep underground burrows and collectively defend against snakes. Longer lifespans in rodent species with special defenses are consistent with the classical theory for evolution of senescence, which states that long lifespans evolve when extrinsic mortality is low (Medawar 1952; Williams 1957; Kirkwood and Austad 2000).


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  • JessieL: That's a shoe, not a tricorn hat. Obviously a tricorn hat would be a subpar defense.

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    Well, shoe-t. I guess that makes me one of the ten thousand today. I always thought that was a hat, and submitted this with the incorrect headline.  I thank you for teaching me something I was wrong about. :)
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