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    Thought Experiment
    From: Dan Allen
    Date: 2002 Jun 11, 22:33 -0700

    I propose a thought experiment with a couple of "back of the envelope"
    estimation questions:
    1) How many sextant users are there in the world?
    2) What percentage of the world's population that are
       interested in sextants are on this mailing list?
    I of course do not know the answers to these questions, but I think
    we can make some reasonable assumptions to be able to come up with
    ballpark figures.
    If you decide to give this informal competition a try, please try and
    give us some of your reasoning behind your estimates, because that is
    the real interesting part of such a question!
    Dan Allen

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