Relativity vs competing theories

In summary, there are several competing theories to Special Relativity, including Lorentz ether theory, Roger's Edwards' theory, and Einstein-Cartan theory. These theories have differing explanations for the postulates of Special Relativity, particularly in regards to the concept of simultaneity. However, they all share the same first postulate of the principle of relativity.
  • #71
Agerhell said:
[..] But if other people have other definitions, then for sure it is hard to have a fruitful discussion.
A "definition" (of characterizing aspects?) of a theory isn't identical - except by pure chance - to postulates on which it is based...
 

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