Errors in Einstein's Reasoning (3)
As shown in our proof of the principle of relativity, the difference in observation results is a necessity for the uniqueness of a physical law. The principle of relativity means two things at the same time: a physical law is unique, and all observation results are relative.
Einstein’s error here is that he took the observation results as the physical law itself.
From the above analysis, we can see that Einstein's reasoning for “the constant speed c of light in all reference frames” is wrong, and Special Relativity becomes groundless.
In summary, Einstein used the two postulates this way:
The second postulate leads to the constant speed c of light in a "stationary" reference frame,
and the first postulate leads to the same speed of light in all reference frames.
With so much effort having been made to explain the insurmountable theoretical difficulty
and the lack of experiment support for "the same speed of light in all reference frames",
let us do not stop here because of this fundamental error in Special Relativity.
In the following text, whenever the postulates are involved,
their use will be based on our understanding, as listed in section 5.