Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
...
"Thinking outside the box" requires conscious examination of your
mental logic to avoid self-imposed presumptions and to take full
advantage of ambiguities in the problem statement. Thus I begin by
discussing the problems travel instructions to expose some common
presumptions, or at least to clearly state my interpretation of the
problems actual requirements.
Each latitude circle defines a plane. For me, "going south" means
crossing latitude circle planes, while remaining in only one longitude
circle plane, and always going across latitude planes in the direction
from north towards south. Thus, going south does not confine one to
traveling on a great circle path on the surface of an assumed
spherical Earth. (If you think it does, then I have no new solutions
to offer you.) For example, I think an airplane can "go south" even if
it is continuously changing altitude during the flight. Etc. for "go
east" and "go north."
...