I don't get the "time running out of space" thing cause time is kinda infinite and doesn't take up space and won't nessessarily ever stop.  (Unless the roots refer to the lifespan of individuals, which do have an expiration date.)

I'd like to think that you can't destroy past selves, because if the future self is still around, that means it survived the attack, so even if it pulls its past self forward with the intention to destroy it, it probably won't work and the past self will get away.  Destiny is, of course, making the whole thing up as it goes along, so you can't really trust whatever it says.

I don't get the "time running out of space" thing cause time is kinda infinite and doesn't take up space and won't nessessarily ever stop.  (Unless the roots refer to the lifespan of individuals, which do have an expiration date.)

 

To you, maybe. Perhaps that is your interpretation of time, this is mine. There are many different interpretations when it comes to timelines and this is simply (one of) my interpretation of time. And I'm talking... metaphorically when I refer to timelines like roots, not literally. 

YOU ARE LITERALLY A ROOT.  ANY PERCEPTION OTHERWISE IS A HALUCINATION!

You both fail for all time. Time is a string that unravels from an origin point and has a definite end. It can be pulled along, and it can be unraveled in places, but never broken.

It is a sword, an unrelenting force of destruction and devastation. It is the end of all warriors, the ravager of beauty, and the herald of certain doom. It is undefeatable, save for the timeless.

For those trapped in its threads, there is no hope, save that some being not entangled would rescue them.