Is time travel... travelling from one 3 dimensional space time to another 3 dimensional space time?

[Judy]

If time is a 4th dimensional thing but still exist in our 3 dimensional world..., time exist as a way or medium.. as we actually do time travel in 'x' time every second, every minute and it's the rate of time our universe is going through and to time travel.., we mean to change that rate of time

 

[Nugatory]

It’s tempting to think of the passage of time as moving through the fourth dimension from one three-dimensional space to another, but it turns out not to work.

However I don’t know of any easy way of explaining why it doesn’t work, except to say “learn special relativity and then you’ll know”. For some things there’s no substitute for beginning at the beginning with a good textbook. One of my favorites is Taylor and Wheeler’s “Spacetime Physics” which is available free on the Internet and (just barely) within the grasp of a motivated high school student.