2 min speech on if time travel were real
Answers
Answer:
Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a widely recognized concept in philosophy and fiction. The idea of a time machine was popularized by H. G. Wells' 1895 novel The Time Machine.[1]
It is uncertain if time travel to the past is physically possible. Forward time travel, outside the usual sense of the perception of time, is an extensively observed phenomenon and well-understood within the framework of special relativity and general relativity. However, making one body advance or delay more than a few milliseconds compared to another body is not feasible with current technology. As for backward time travel, it is possible tuo find solutions in general relativity that allow for it, such as a rotating black hole. Traveling to an arbitrary point in spacetime has a very limited support in theoretical physics, and usually is connected only with quantum mechanics or wormholes, also known as Einstein-Rosen bridges.
Answer:
In all time travel theories allowed by real science, there is no way a traveler can go back in time to before the time machine was built. I am confident time travel into the future is possible, but we would need to develop some very advanced technology to do it.