VIDEO : 'Avengers: Infinity War' Fan Theory Explains '1 Path to Victory'

The latest attempt at solving the mysteries of Avengers: Infinity War, like many others, deals with Doctor Strange's attempt to examine alternate futures, finding the one outcome where Earth's Mightiest Heroes actually defeat Thanos. Of course, the movie doesn't turn out as expected when Strange gives up the Time Stone, allowing Thanos to succeed in assembling the Infinity Gauntlet and wiping out half of existence. The fan theory on Reddit states that Thanos and his sacrifice for the Soul Stone is key to the heroes' victory in Avengers 4, due to that particular Stone's place in relation to the others.