While forward time travel is a proven scientific reality through time dilation, traveling into the past remains a theoretical impossibility due to rigid physical and logical barriers. The provided text explores how this concept evolved from ancient mythology and divine miracles into a complex science fiction trope used for social commentary. Modern physics, particularly Einstein’s General Theory of Relativity, offers mathematical frameworks for time manipulation, yet practical obstacles like entropy, energy conservation, and astronomical drift prevent backward transit. Beyond the science, these limitations serve a philosophical purpose by protecting the integrity of the present and ensuring human actions have permanent consequences. Ultimately, the universe appears to possess a "physical lock" on history, forcing individuals to focus on the only  ...