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TheOtherDave comments on Excluding the Supernatural - Less Wrong

37 Post author: Eliezer_Yudkowsky 12 September 2008 12:12AM

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Comment author: TheOtherDave 19 December 2011 04:18:39AM 1 point [-]

If it turned out that there was a rare degenerative illness that prevented sufferers from absorbing nutrition from any source other than blood, would you agree that sufferers of that illness were vampires?

Comment author: DSimon 19 December 2011 04:46:11AM *  0 points [-]

Ack. Okay, I guess I have no choice but to add yet another qualifier. :-)

How about: Vampires are very long-lived humanoids that derive their longevity from drinking blood. I can't think of a mundane example that fits that description. Which I suppose was Phil's original point: the only useful definition of "vampire" is one which excludes everything that could plausibly exist.