Evidently . . .
you are pretending yet again . . .
that you understand
100% of all
forces acting on all atomic and subatomic structures in all contexts and all contingencies in and considering all dimensions.
That’s a greater leap of blind faith than I can make about such things.
Besides . . . an interesting number of credible folks say such assumptions are just plain wrong.
“Besides . . . an interesting number of credible folks say such assumptions are just plain wrong.”
They are not assumptions. Mass increases as one approaches the speed of light thus requiring more energy which then increases the mass and on and on till mass becomes infinite. I don’t know what credible folks you are referring to, but the most credible physicists, including Einstein accept this fact. The ball bearing experiment you keep quoting is about inertia anyway, and highly questionable.