Comment on “Symmetric twin paradox for free-falling frames: Argument against the relativistic time dilation?”

Abstract

In a recent article in this journal, Václav Vavryčuk and Michal Křížek have argued the Lorentz transformation does not predict time dilation, therefore the theory of relativity must be incorrect. To prove their claim they concocted a configuration of the twin paradox where no age difference is involved between the siblings. We explain the problems with their argumentation that make their conclusions untenable.