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    Re: Not exactly Navigation, but close...
    From: Bill B
    Date: 2008 Apr 24, 02:15 -0400

    Frank wrote
    > We can predict their motion once they are
    > catalogued. It's as good as having a train schedule.
    Interesting.  A decade or more ago, freight trains were doing an excellent
    job according to railroad management.  Running on schedule.  When a new CEO
    took over, he noted the standard was--did it get from point A to point B in
    the scheduled amount of time?  Mostly yes.
    The question he raised was, did it leave point A when it was supposed to?
    The answer, mostly no. Many left point A days behind schedule. Elapsed time
    a big success.  Scheduled departure dates and arrival dates a dismal
    failure. ;-)
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