Vayshan, please, formulate the Special Theory of Relativity (STR) for me. What you are so zealously defending is only a consequence applicable to the objects that people usually deal with. And the STR itself speaks of something slightly different. And it is also a special case of the General Theory of Relativity (GTR), also formulated by Einstein, and containing quite interesting things.

"The Special Theory of Relativity (STR) (also known as the private theory of relativity; relativistic mechanics) is a theory that describes motion, the laws of mechanics, and spatiotemporal relationships at speeds close to the speed of light. Within the framework of the special theory of relativity, Newtonian classical mechanics is an approximation for low speeds. The generalization of the STR for gravitational fields is called the general theory of relativity."
Thank you, Wikipedia. The argument actually started not about the validity of the Theory of Relativity, but about the assumptions in science fiction, and I gave such a well-known example where something that is impossible according to modern theories is postulated as something commonplace, namely, travel at the speed of light or even faster, and for some reason this does not raise any questions from anyone, unlike some other examples of assumptions in science fiction. Double standards, however.