Enrique Martinez Viladesau Escuela Técnica Superior de Ingenieros Industriales de Barcelona (ETSIUB), Spain emviladesau@gmail.com International Journal of Fundamental Physical Sciences (IJFPS) 8 1 1-4 March, 2018 2231-8186 https://doi.org/10.14331/ijfps.2018.330108 This article critically evaluates the validity of using atomic clocks to support the concept of time dilation as predicted by the theory of relativity. It argues that time dilation arises from misinterpretations of thought experiments and measurement methods rather than actual physical phenomena. The author revisits classic experiments, including the train car scenario, and emphasizes the distinction between simultaneous observations and transformations of time. The conclusion suggests that the concept of time dilation is a fallacy arising from observational and interpretational errors. Relativity, Time dilatation https://creativecommons.org/licenses/by-nc/4.0/