Time traveling is just full of crap, innit?

[ErGingerbreadMandude]

How would that even work? Does the cell growth slow down or something when you travel at the speed of light?

Yes. Everything on the quantum level slows down. A photon which of course is traveling at the speed of light, doesn't even experience time passing at all.

Hear me out: 

Say it takes "x" 4 seconds to go from a to e. (a->b= 1 sec, b->c= 1 sec, c->d= 1 sec, d->e=1 sec : 4 seconds)
If we allocate only 2 seconds for x to go from a to b -> then (a->b=1/2 sec, b->c = 1/2 sec, c->d= 1/2 sec, d->e=1/2 sec : 2 seconds)

^^ That's what I'm saying. According to what I'm saying the end result would be same no matter how fast or slow you are. (You would age the same.)

Here's what you're saying: 

If we allocate only 2 seconds for x to go from a to b -> then (a->b=1 sec, b->c = 1 sec : 2 seconds). So x essentially "slows down"(according to you). My question is - how do you arrive at this conclusion and not the one I described above?

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Let's say I roll a ball from point a to point b. It takes the ball 4 seconds for it to get from a to b.

Let's say I(go back in time and) roll the same ball from point a to point b. This time it takes the ball 2 seconds to get from a to b.

Is there any difference between the ball I have at b in the first scenario and the ball I have at b in the second scenario?