[ vdfsvlfbdsj, and this is what Nate loves to talk about, and it shows in his face, in how animated he is when he starts talking. ]

Well, here's the thing. Time takes time to solidify. When someone goes back in time and changes something, even the smallest thing, it takes time for that event to ripple through the whole timeline. So there's a chance to detect these changes, and correct them.

[ Time is fascinating. ]