On Mon, 26 Dec 2005 22:07:16 -0500, "Eisboch" wrote:

the original question was that if a computer (GPS) could work its magic
and do a no brains naviagtion by telling you where to steer to go from
point A to B WITH cross wind/current.

WITH NO MANUAL INPUT OR READING THIS PARAMETER OR THAT ERROR

Simply (and only) by giving you degree where you need to point your
bow.

===========================

That's not a GPS, it's called a navigation computer or calculator. It
will still require manual inputs, and they will be estimates at best.

The question as stated is of theoretical interest only since the
constraints imposed are quite artificial in the real world.

In the real world your GPS will in fact tell you where to point your
bow but it is a feedback mechanism, not a one shot calculation. Even
NASA makes mid course corrections based on observed vs calculated.