On Tue, 24 Oct 2006 16:19:53 GMT, Short Wave Sportfishing
wrote:

You used a globe which could be considered a
artistic rendition of what the Earth looks like, but isn't necessarily
a true rendition of what the complete picture is because it's heavy on
continental distribution.

You lost me on that one. As long as the globe accurately represents
the latitude and longitude of significant surface points (and most do
in my experience unless they are antique), then you should be able to
determine viable great circle routes with a reasonable degree of
accuracy.