We have shown how the periodic system constitutes a statistic of the chemical space, as it directly reflects changes in it. Therefore, the historical convergence of the system we report here indicates a degree of preservation of the chemical space, that is a repetitive process in its evolution in spite of its exponential expansion. We have recently provided evidence of how the unfolding of the chemical space turned its evolution into a path dependent process, where repetition of past events or behaviours have shaped the present and future of the space . Rescher, in turn, has argued that repetitive science is an essential part of every science, required for attaining innovative results advancing knowledge . These arguments, along with the above discussion on the unlikely challenges for the status quo of the periodic system, indicate that the system we currently know will likely remain as a stable object encoding the essence of a discipline gathered in the material product it creates: the chemical space.