Ever wonder why section lines do dog-legs?
Excellent point!
People could also consider that celestial navigation works.
It would be impossible for it to work on a flat earth.
I have actually tied into a geodetic point ... don’t remember the name of the mountain .. long ago ..
but as a builder, I’ve never really had a need for anything
other then plane surveying
so as a rule I try to kiss it(keep it simple)
Over the years I have noticed a few things that seem to be beyond me. Brain teasers if you will.