Summary of reasoning - Translated by Easy Translate
In my book “Et il survolait les eaux vers une nouvelle vision du monde physique” (And It Flew Over the Waters Towards a New Vision of the Physical World), I attempt to demonstrate the following important aspects in chapters 2 to 7:
a) that the physical invariance of the speed of light implies the physics principle of relativity of simultaneity in the physical context (Chapters 2 and 5);
b) that the principle of relativity of simultaneity in the physical context is in contradiction with itself, which can be demonstrated by the shuttle and the missile;
c) that there has to be an absolute simultaneity in the physical context since there exists no third possibility besides the relativity of simultaneity in the physical context and absolute simultaneity in the physical context;
From this we can conclude:
d) that there has to be a present moment for the Universe;
e) that, in all cases, the speed of light cannot be physically invariant relative to the various inertial frames of reference, which we will most likely be able to measure one day.