Why didn't anyone go back in time to prevent the damage cause by Narada's actions?
7931
Why didn't Temporal Agents stop Nero from destroying Vulcan?
75686
Would Finn's attack have succeeded?
136543
Why didn't Dumbledore prevent the prosecution of Sirius Black?
140787
Why didn't Doctor Strange use the Time Stone to prevent Thanos from claiming other Infinity Stones?
65029
Why do we remember the past but not the future?
70853
Why did It not do this to The Losers?
50373
Why isn't memory admissible as evidence in the Harry Potter universe?
11307
Is time travel possible? Is it possible to go back in time?
52522
Why did the Nazgûl not attack a second time at Weathertop?
58462
Impossibility of time travel due to energy conservation?
38335
Why aren't the zombies decomposed after all this time?
131835
Why couldn't Voldemort trace Harry's residence and kill him?
47806
Why didn't Kabuto resurrect Jiraiya during the Great War?
17793
Why didn't Aragorn keep going with the army of the dead?
38796
How come SG-1 couldn't get back to Earth?
1624
Past plans for the future
123946
Why didn't Doctor Strange wind back the clock way before Thanos got any of the Infinity Stones?