Re: The first postulate is a truism.

On 2025-06-19 17:37:29 +0000, LaurenceClarkCrossen said:

Perplexity:
 "The First Postulate of Special Relativity
 Statement of the First Postulate
 The first postulate of special relativity, also known as the principle
of relativity, states:
     The laws of physics are the same in all inertial frames of
reference."
  "truism
/ˈtrˌizƏm/  n. a statement that is obviously true and says nothing new
or interesting. —truistic/trˈistik/ adj." -Oxford American.

The first postulate is not a truism. It is possible to imagine a world
where it is not true and to believe that we actually live in a such
world.
--
Mikko