I time travel all the time. If you leave New Zealand to go to Rarotonga you arrive the day before you leave, while if you fly from NZ to the US you will also arrive before you leave.
Looks like yer shitouttaluck there, sport According to Einstein's theory of relativity, the concept of "time travel" is primarily linked to the equation E = mc², which describes the relationship between mass (m), the speed of light (c), and energy (E); essentially, traveling at speeds close to the speed of light would cause time dilation, allowing for travel into the future, but not necessarily the past, as this is currently considered theoretically impossible based on our understanding of physics.
I time travel a few times a week. I wake up in the middle of the night…glance at the alarm clock and realize I have 3 more hours to sleep…then blink and my alarm goes off.
If there was a meaningful form of backwards time travel (that is, going back into our own actual past), then we should be seeing time travelers and we haven't so I'd say it can't happen.
Going forwards is another issue: There’s also the issue that some theories say you would be stretched (spaghettified) as you approached the event horizon.
You don't need to go near a black hole. You just need to go fast. People that go on an airplane travel a bit into the future (at least those going east). Just by fractions of a second, but they do.
My kids would leave NZ on Xmas day evening and arrive in LAX in time for a second Xmas Day. Always fun.
They could do the same for the inauguration. Experience it in NZ then fly to DC to watch the bund rally.
Books have been written about going back to kill Hitler. More about the ramifications of meeting yourself as a kid. Even trying to stop the Kennedy assassination. The past is, well, past. All those people are dead and buried. The future hasn’t happened. So my vote is no. Will I still have a vote in the future?
I think, for a supermassive black hole, that you wouldn't be spaghettified before crossing the event horizon. For a smaller one, yes.