On Sat, 25 Oct 2008 15:51:27 -0700 (PDT), oriel36
wrote, in part:

Is there something so fundamentally repugnant in that overlooked
orbital component that has people blurting out 'axial tilt' which is
only rotational orientation and does not cause the seasonal
variations ?.The specific way a planet orbits the Sun is fascinating
and whether you know it or not,this new component is a rather large
modification to planetary dynamics.

But it is the rotational orientation that determines how the two 360
degree motions combine, and the kind of seasonal variations they
produce!

John Savard
http://www.quadibloc.com/index.html