Roger knew the secret of the matrix and Kathara's scheme as a "System" that they themselves had implanted in support of that phantom matrix. To modify future events and change the events of the serial killer, balance is necessary. Roger had already left his balance tilted to the left side... He needed that balance that Sara provided him with her selfless and loving acts, which had somehow opened Roger's heart. She had feelings of "Humanity"... He needed her and deep down he loved her. The question “What is humanity?” at first it seems trivial, perfectly obvious and unnecessary. However, if we take a closer look at the popular hypothesis about...