Time travel is a debated topic, with some believing it is possible through theories like 11-dimensional string theory. However, practical time travel remains a distant possibility, with the consensus leaning towards future travel being feasible, while returning to one's past is viewed as highly unlikely. The discussion emphasizes that current scientific understanding does not support backward time travel, as it raises complex paradoxes. The idea of time travel is largely categorized into science fiction, with limited scientific backing for backward movement in time. Overall, the conversation highlights the complexities and limitations surrounding the concept of time travel.