Presentism is a school of philosophy that holds that the future and the past exist only as changes that occurred or will occur to the present, and they have no real existence of their own.
In this view, time travel is impossible because there is no future or past to travel to.
What are the rules of time travel?
Rules for Time Travelers
- There are no paradoxes.
- Traveling into the future is easy.
- Traveling into the past is hard — but maybe not impossible.
- Traveling through time is like traveling through space.
- Things that travel together, age together.
- Black holes are not time machines.
- If something happened, it happened.
- There is no meta-time.
How time travels to the past?
How To Time Travel, According To A Physicist –
Is time an illusion?
According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn’t correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton’s picture of a universally ticking clock.
Are wormholes possible?
A wormhole can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, or different points in time, or both.) Wormholes are consistent with the general theory of relativity, but whether wormholes actually exist remains to be seen.