From the GI (I've trimmed down both the question and the answer):
So the current attack--I assume he means Joan's creation of caesures--is what makes time travel possible for every other being except the Elohim? That means that time travel has only been possible for 100 years, or however long caesures have been present in the Land.Jon Webster:
If time travel is possible, why can't any number of characters who desire ultimate destruction, like Kastenessan, LF, or Roger just go back in time and change the course of history, which would destroy the arch of time?
If Time itself, and the whole structure of Law, weren't already under attack, time travel would not be possible (except, one assumes, for the Elohim, who have no interest in destroying anything). (12/05/2007)
But then how was the Vizard able to move super-humanly fast? How was the Theomach able to "slip sideways" in time? These two Insequent lived long before the first appearance of caesures. And the Theomach seemed not at all surprised about the fact of time traveling Roger/Jer/Linden. In fact, he intercepted them, even though what they were doing was apparently impossible in his time.
Does this make sense to anyone else? Doesn't it seem that the Insequent have been bending the Law of Time for much longer than LF's current attack upon it?