As if you're 5??

Ok I'll try. All of us are always moving, even if we think we are standing still. You see, even if you stand as still as you can, time still passes for you. You're still moving through time.

Scientists have determined that this stuff we move around in, this...space, this reality it's actually part of the same stuff as time. We can call it spacetime.

Now, there is a max speed you can move through spacetime. We don't really know why, it's just a rule of the universe. If you stand as still as possible, you move through time as fast as you can. 1 second a second. If you start moving though, you increase your...spacespeed. You start subtracting from your timespeed.

Now the way the conversion ratio works, if you're moving as you normally do, you don't really slow down moving through time much. You have to move really really fast, like light speed fast, to have a significant effect on your timespeed. And as you get closer and closer to lightspeed, your timespeed gets closer and closer to zero, because you're taking that travelling speed away from time and putting it into spacespeed.