@cryptogee the Many Worlds Interpretation! That's actually what I subscribe to, though I didn't want to bring it up because it isn't the conventional view of time travel (yet). We'd also have to take into account their importance in history. Were they necessary evils? Is taking them out of the equation opening the gate to larger atrocities? It's a pretty difficult balance to weigh, but I guess the stakes are higher for people who have such great powers afforded to them :D