Ask AI: Is time travel real and how do we know?

As of now, time travel exists purely in the realm of science fiction and theoretical physics. There is no practical or proven technology or ability for a human to travel forward or backward in time. However, theories such as the Theory of Relativity by Albert Einstein suggest that time travel could potentially exist. This theory emphasizes that time is not a constant and can vary depending on the speed at which one is moving compared to someone who is stationary. There are also concepts such as wormholes, which are shortcuts through space-time. But these are still theoretical and have not been proven or observed. Ultimately, we don't have definitive proof of time travel, and any potential feasibility as suggested by theoretical physics does not necessarily mean we could practically achieve or survive such a process. It's an extremely complex and largely unknown area of science, which is yet to be fully understood.