Albert Michelson measures with almost absolute precision the constant - limit of the universe, speed of photo (c). What would a possible instantaneous transfer of the photon mean? Which concepts would be strengthened and which would be weakened?

Is this correct: There would be a perfect superposition of two points at any time. It is inconsistent with the theory of relativity. The whole theory of quantum mechanics would collapse. It would imply that light/information could travel from one point in the universe to another without taking time to do so. This idea contradicts the principles of causality and the theory of relativity, which holds that information and energy cannot travel faster than the speed of light.

I'm not sure about the concept it asks, if anyone has the time and helps out I would appreciate it so much! Thanks