“History is the witness that testifies to the passing of time; it illuminates reality, vitalizes memory, provides guidance in daily life, and brings us tidings of antiquity.” - Marcus Tullius Cicero
No one can change the past and no one can predict the future. The only thing we can control is what we do now. Therefore, humans creatively invented a way to bring back the past into the present when something might go wrong in the future. This invention is called saving data, documents or files and putting them into memory.