In other words, in an education for understanding geometry, a primary goal
would be to help the student “rethink” and “see from different perspectives”
(to refer back to two of our key ideas) the axioms that earlier were accepted
as so many “givens,” without question. Then the student can later say, “Now I
see why we assumed these postulates . . .” or “Whoa! When we just assumed
those to be true it seemed arbitrary, but now I see it wasn’t” or “Huh! Those
givens seemed more obvious and less controversial than they do now.