Time travel has long been a subject of fascination in science fiction, from H.G. Wells’ The Time Machine to modern films and series. These stories often explore the unintended consequences of altering events—introducing concepts like the "butterfly effect," where even small changes in the past drastically reshape the present or future. If time travel were real, changing the past could create legal and moral chaos. Laws are based on a linear timeline, where cause and effect are predictable. Altering key events—such as preventing a war, reversing a death, or undoing a major invention—could erase or rewrite entire lives, raise questions about free will, and challenge historical accountability. Who decides what changes are justified? Would there be regulations, courts, or oversight bodies for time travel decisions? This debate draws from theoretical physics, legal theory, and ethics, touching on power, consent, and unintended consequences. It also reflects deeper human desires—to correct mistakes, undo suffering, or reshape history in pursuit of a better outcome—while warning us about the fragility of the world we know. Time travel has always captured people’s imagination. If it were ever possible, the idea of going back to the past would open endless possibilities and problems alike. For centuries, people have wondered what it would be like to revisit key moments in history, to stop a disaster, prevent a tragedy, or simply satisfy curiosity about how things really happened.