system
Given the following post, respond as if you're commenting on Reddit:
human
Is time truly another dimension or is it a description of the other three?

What I mean is: we tend to percieve time as a line or something that we're travelling through, and different events happen at different plottable points on this chart.
But all the ways we measure time are based on repeatable events/the movement of things through the universe, e.g. years, days, seasons, and if nothing moved, there would be no time.  Time-travel is impossible because you'd have to rewind every atom etc to the position it was in whenever you're travelling to.

So, my questions are: is time it's own direction, or just a description? Is this why time and space are connected? Is this even a valid question? Please rid me of my ignorance.

There is a possibility also that it is the words we use to describe time that's causing my problem here: "forwards" in time, time "travel", "timeline" etc.
gpt
Yes, time is a dimension just like the other three, with the exception of one small, technical difference in its mathematical description. Spacetime is a four-dimensional surface on which all physics takes place, and depending on your speed through spacetime, which directions correspond to time and which to space will vary and become intermingled, much how when you rotate a sphere, the new latitude coordinate is a combination of the old latitude and longitude coordinates.