To Erik

You tilt the Earth towards and away from the Sun rather than allowing
the change in orbital orientation do the job of cyclical seasonal
changes.

http://www.astronomynotes.com/nakedeye/s5.htm

I suppose you imagine that there is such a thing as sunrise and sunset
and you can't imagine it is the Earth's axial rotation that generates
the illusion,the orbital illusion appears as a variation in the motion
of the Sun highere and lower against the horizon but only a complete
idiot would express it in terms of axial tilt to the orbital plane.

Keep things local and express cyclical seasonal changes to changing
orbital orientation against fixed axial rotation.Then and only then
will you get to appreciate the scale of our parent star and the
enormity of the Earth';s orbital motion and geometry.