Actual Method of determining Time Traveling in Past and Simulation

Abstract

People and Scientists spend decades checking Time travelling is possible or not. Yes, travelling in future is possible and proved many ways but when it comes to traveling in Past people start discussing Quantum level, or in simulation and try to prove with formulas. Moreover, it's the same whether we are in simulation or not. However, I am going to tell the actual method to check if it's possible or not. I am using radioactive atom or the Muon to check instead of Theory or Formula. It will open gates for actual practical approach to check that we are in simulation or time traveling possible in the past.