Re: The first postulate is a truism.

On 2025-06-23 13:32:06 +0000, LaurenceClarkCrossen said:

On Sun, 22 Jun 2025 11:25:52 +0000, J. J. Lodder wrote:
 

Mikko <mikko.levanto@iki.fi> wrote:
 

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
/?tr?iz?m/  n. a statement that is obviously true and says nothing new
or interesting. —truistic/tr?istik/ 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.

 Applying 'truism' to postulate is a category error anyway,
(but what do we expect from dear Laurence?)
 Jan

Speaking of category errors, why didn't Einstein make his first
postulate:
"The laws of electromagnetism are the same in all frames of reference."

Because the main open problem at the time was whether they can be the
same in frames that are in uniform linear motion with respect to each
other. Accelerating frames are not relevant to that problem.
--
Mikko