system
Given the following post, respond as if you're commenting on Reddit:
human
If we stop traveling through space, would the flow of time be infinite?

I have seen that when you travel through space at the speed of light (assuming you were massless of course), the flow of time for you is paused. So if we take the reverse of the process and somehow stop moving through space completely, would you experience time flowing super fast / infinitely?

Sorry if my understanding of the principle is subpar.
gpt
Nope. It doesn't work both ways. Think of it like this: roughly speaking, your total speed through spacetime is the speed of light. So when you move through space at the speed of light, time stops moving for you (though not according to an outside observer). And when you're at rest in space, you move through time at the speed of light.

What does that mean, "you move through time at the speed of light?" First of all, you can't measure passage of time in terms of a speed, which is distance per time. It has to be time per time (that is, how many seconds pass for you for every second passing for some other observer?). So how do we turn the speed of light, a distance per time, into a time per time? Well, we use the speed of light. It's the universal conversion factor between space and time units. So really this means that if you're at rest, time passes for you at the pedestrian rate of one second per second.

Second, this is a relative statement. You always perceive your motion through time as being one second per second. What we're asking is how time moves for you relative to some other observer. When we say you're at rest, we mean you're at rest relative to such an observer. And so all this "traveling through time at the speed of light" really means is that your clock ticks at the same rate as the clock of someone not moving with respect to you.