The justification of time travel is fundamental to Endgame's second act, with characters repeatedly questioning its possibility. Of course, Tony Stark's scientific explanation - its perils are rooted in quantum chromodynamics theory, Scott turned into a baby and old man because of the EPR paradox and Deutsch proposition, the wrist devices derive from the eigenvalue of a particle field accounting for spectral decomposition under his Möbius strip configuration - glances with genuine theory but one without any real application. Yes, Möbius strip time travel is a pre-existing idea (it's at the heart of the grandfather paradox), but it's not how the film presents time travel. There are two scenes in Endgame where time travel is explained. First is Banner ahead of Hawkeye's test mission. Responding to Rhodey's suggestion of killing Thanos in the crib (an adaptation of the "kill Hitler" time travel theory), Bruce dismisses most time travel examples from popular culture (Ritorno al futuro (1985) especially, but Star Trek (1966), Terminator (1984), Timecop - Indagine dal futuro (1994), L'uomo venuto dall'impossibile (1979), In viaggio nel tempo (1989), Ovunque nel tempo (1980), Un tuffo nel passato (2010) and Bill & Ted's Excellent Adventure (1989) are all mentioned), stating "if you travel to the past, that past becomes your future and your former present becomes the past, which can't now be changed by your new future." The basic implication is that you can't change the past because you've existed in the future; no matter what you do, the end result is the same. Even if you were to try and kill baby Thanos, the future you have must be unchanged. Later, when Bruce is attempting to get the Time Stone from the Ancient One, she talks to him and elaborates on his idea further: "The Infinity Stones create what you experience as the flow of time. Remove one of the stones and that flow splits." This suggests that, while the post-Decimation future the Avengers have come from will be there when they return, their actions in the past can impact the timeline to the point that new timelines are created (which, due to the lack of Stones, are much more fraught). While it's possible any change could do this, it's only explicitly stated that it occurs when an Infinity Stone is removed from the timeline, which Bruce proposes can be fixed if they "return each one to its own timeline at the moment it was taken so chronologically, in that reality, it never left." In short, the Avengers can't change their own timeline as it already happened, so going into the past doesn't affect their own reality. However, removing the Infinity Stones from an earlier point does, creating darker timelines. To correct this, the Infinity Stones need to be returned to their original place in the timeline after use. Now, both of these exposition characters are shown in Avengers: Endgame to not have full knowledge of the situation - Bruce is enlightened by the Ancient One, who is herself later corrected by Doctor Strange's plan involving giving up the Time Stone - but given these are the film's prime exposition beats regarding time travel, they can be assumed to be intended as accurate by the filmmakers. The ambiguity comes with what is a big enough change to alter the timeline: taking an Infinity Stone creates a branch, but returning it would essentially uncreate it.

Film

Nessun dato in archivio