User blog comment:SonicFan/Your Least Favorite YJ Episodes/@comment-5638184-20121019120608/@comment-98.89.143.147-20121021020313

If Bart does manage to fix the future, then won't he not exist in our present because he won't have had a reason to come back? It would probably be like, next to last episode: Impulse explains to the team why he really came back to the past and they redouble their efforts. Then last episode, they finally fix the future and Bart suddenly goes fuzzy, breaks out into a grin from ear to ear, "CRASH!" and then disappears, leaving the entire team going, "Does that mean we won?" Then we see a timestamp for Impulse's proper time, only it's the fixed version and we see Impulse with that future's version of the team for like 30 seconds at the very end of the season.