The point of the mathematics of Relativity is NOT that the speed of light absolutely can NOT be broken, but that we can not break that barrier by adding more and more energy to the object, as with a jet plane. This is due to the observed FACT that as we add energy, the object gets increasingly heavy.
Particles in the most advanced accelerators have so much energy that “at top speed” they weigh in excess of 10,000 times their stationary mass, and are traveling on the order of 0.9999995 times the speed of light. Adding ten times the amount of energy will make them 100,000 times more massive, and their speed will become on the order of 0.999999995 times the speed of light. Rapidly diminishing returns.
You missed my point. I was saying that most barriers are artificial in nature. It takes people thinking outside the box — thinking the unthinkable — to get past them. As with the Sound Barrier, I don’t think the Light Barrier is absolute. How we get past it is not my concern, but I think it is possible and it will happen.