If you can understand that from Abe's perspective in the second time line is to turn on the fail-safe and 15 minutes later Aaron(2) pops out (but he is not identified as a time traveler until later). That immediacy helps us to see how Aaron(3) and Abe(2) are present simutaneouly as well. So as Abe builds the box, it is quite possible for Abe(2) to try to sabotage it. Also, Aaron(3) can act to repair the box. So the box can work for a few hours, then suddenly not work. In the second time line, it seems that Aaron(2) was capable of repairing the box, even if Abe(2) had tried to contain future time travel ( or at least the box Abe(1) constructed).
Aaron(3) seems to feel that his survival is dependent upon not creating a paradox (especially since he personally experienced the Granger incident and fears something similar could happen to him).. If Aaron(2) will not get back into the box, then his survival could be threatened. Aaron(3) could also be just a past rendition of Aaron(4). Aaron(2) realized as he stated at the gas station, that he is living in a repetition where all of his actions are virtually programmed. Even if he would alter his course from the previous unremembered time line (now in revision), then Aaron(3) could always just reset the day and insure that Aaron(2) is not able to disrupt his plans again. Perfection has a high price.
Aaron(3) seems to feel that his survival is dependent upon not creating a paradox (especially since he personally experienced the Granger incident and fears something similar could happen to him).. If Aaron(2) will not get back into the box, then his survival could be threatened. Aaron(3) could also be just a past rendition of Aaron(4). Aaron(2) realized as he stated at the gas station, that he is living in a repetition where all of his actions are virtually programmed. Even if he would alter his course from the previous unremembered time line (now in revision), then Aaron(3) could always just reset the day and insure that Aaron(2) is not able to disrupt his plans again. Perfection has a high price.
