Gerhard Ris, former lawyer, and magistrate with thirty years of experience in courts of law The basic psychological fact that different intelligence and personality types can’t understand each other has led to the mounting global amok. The task of the legal sciences is to know how conflicts arise, and how to put an end to conflicts and keep them ended. The know-why has eluded humanity. Most also know that classical mechanics, general relativity, and quantum mechanics are at odds. Here I show that following a well-known legal crime scene procedure with very few slight twists proves the thesis of one law of nature as one law of human nature of which all the theorems were in long ago. The theorem of John Bell on quantum entanglement falsifies the axioms of the antithesis. It’s a non-elementary reality as basic local laws of science. By default, there is no reason that the cosmos isn’t classical mechanics and thus governed by simple rules. The grand axiom and grand goal of homo sapiens prove the thesis via the strongest possible reductio ad absurdum proof combined with the weakest proof of convincing circumstantial evidence. All data taken into evidence shows only data pro requiring one idea for the proof. Preventing pestering very practically produces peace and prosperity in our time.