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    GPS out by miles
    From: Frank Reed
    Date: 2016 Nov 1, 11:58 -0700

    I recently heard a story about GPS fallibility. A sailor related his enthusiasm for celestial navigation. He said that he didn't trust GPS because "sometimes it's wrong by miles". He described sailing off the coast of North Carolina and he knew where he was, but the GPS placed him five miles from that location. I think there's a lesson here... What might that be? Of course without interrogating him in detail, which would have been rude, we can't really be sure what was happening here. What are some of the possibilities??

    Frank Reed

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