Time manipulation refers to the theoretical ability to alter the flow of time, either by speeding it up, slowing it down, or even reversing it. This concept is often explored in science fiction, where characters might travel to the past or future, affecting events and outcomes. The idea raises questions about causality and the nature of time itself. In physics, time manipulation is often discussed in relation to theories like Einstein's Theory of Relativity, which suggests that time can be affected by speed and gravity. While time travel remains speculative, it captivates the imagination and inspires various forms of media, including books, movies, and video games.