On Saturday, 22 June 2013 23:38:57 UTC+2, Zeit Geist wrote: >>> Is that a true statement?
> > Of course, if the plane is a plane.
> Would that Boing or Sescna?
Products from BOEING or CESSNA I would call aeroplanes.
> But really, not sure what you mean. Do you mean if the plane is a Euclidean Plane?
I don't know other "planes" in pure geometry.
But with respect to your ulterior motive: The existence of non-Euclidean geometries is in no relation with the question whether anybody in reality can well-order all real numbers. The answer given by Zermelo is "yes we can". And the reality is comparable with Obama's results (yes we scan).