Method of Verifying the Existence of Velocity Vectors Excluded by the Special Theory of Relativity

This paper discusses a thought experiment whose result contradict the predictions of the special theory of relativity. The reason why this contradiction appears is a velocity vector attached to an inertial frame. Since this sort of inertial frame exists in the natural world, the “principle of relativity” that regards all inertial frames as equivalent, cannot be regarded as a true principle. This paper concludes that the special theory of relativity, which assumes the “principle of relativity” in its development, is a theory with a built-in contradiction.