This enabled the authors to have a generic calculation method that covers situations beyond the time of arrival that other proposals could not treat [ 50 , — ]. Giacomini F. Although without constraints and having "general evolution", the latter is only in terms of a discrete parameter that isn't physically accessible. Our remark here is on constructing a memory; it is hard to understand how the observer can construct a memory in a Universe of stationary states except through different spatial locations. Caldirola's original article has a different formula due to not working in standard units. J Appl Phys — Quantum Evolving Constants. Clearly, no absolute time existed according to these two philosophers.