There is an easy way for students to fall in love with Einstein's logic.
It is possible to expose, in the absence of any prior knowledge of
physics, the depth of Einstein's thoughts which are so deep indeed that,
at first sight, one might find them silly, confusing etc. Students
should just read initially the very short Section 7 in Einstein's
"Relativity" and then discuss possible conclusions as follows:
(1) The principle of constancy of speed of light is a corollary of the
principle of relativity ("....the law of the transmission of light in
vacuo must, ACCORDING TO THE PRINCIPLE OF RELATIVITY, be the same for
the railway carriage as reference-body as when the rails are the body of
reference.")
(2) The principle of constancy of speed of light and the principle of
relativity apparently contradict one another ("In view of this dilemma
there appears to be nothing else for it than to abandon either the
principle of relativity or the simple law of the propagation of light in
vacuo.")
(3) If (1) is true, Einstein should not claim that the theory is based
on TWO principles - rather, it is only based on the principle of
relativity.
(4) If (1) is true, Einstein still has the right to claim that the
theory is based on TWO principles - after all, he is the author.
(5) The illusion hinted at in (2) is so haunting that both profanes and
"prominent theoretical physicists" are longing for the rejection of one
of the two principles. The need for a divine mind to resolve the
contradiction is urgent.
(6) And the divine mind comes in the end ("At this juncture the theory
of relativity entered the arena"). The two principles are not
incompatible and this discovery by the divine mind becomes evident "as a
result of an analysis of the physical conceptions of time and space"
(Poincare has certainly nothing to do with the discovery). Now it is
time for sycophants to enter the arena.