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    The circumnavigator's paradox. was: Benetnasch and Alkaid revisited
    From: George Huxtable
    Date: 2005 Apr 6, 16:37 +0100

    Thanks to Bill for a really interesting posting about "the
    circumnavigator's paradox".
    I hadn't heard, before, about either of his quoted sources, theorising
    about what a circumnavigator would discover. It's good to learn that the
    "what if ...?" style of argument was in use in those days. Did the clergy
    of the day, Muslim and Christian, realise how this might subvert the notion
    of divinely-ordained holy days?
    I had thought the matter hadn't arisen until Magellan's ship returned in
    1522, to discover that Mass was being celebrated on a different day to
    everyone else, in spite of having kept a meticulous count. So it's good to
    discover that the matter had been thought out long before.
    But I'm a bit puzzled when Bill writes-
    >Around 1377 Oresme wrote his Traiti? du ciel et du monde, a French
    >translation and commentary of Aristotle's De caelo et mundo, in which he
    >again discussed the circumnavigator's paradox.
    Is he saying here that it was originally Aristotle, before Oresme, who had
    posed and resolved the circumnavigator's paradox?
    contact George Huxtable by email at george---.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

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