Hardly anyone could say that they haven’t seen Avengers: Endgame now that it’s in the theater. Even if you have never seen a single Marvel’s film, you should still go. You’ll have a fantastic time, and we promise you that you won’t even want to buy popcorns for the whole duration of those fantastic three hours.
But no matter, how well-made the film is, nothing is perfect, and here are several plot holes that Marvel has to fix. And we can easily speculate on numerous of them. Being that said, here is *Spoiler Warning*, if you have not watched this movie yet, then you should avoid this post until after you’ve watched Avengers: Endgame.
Steve Rogers’ Pym particles
Let’s discuss Captain and the number of particles he takes with him while going on a mission to return all of the Infinity Stones and Mjolnir.
He has to visit, in whatever order he assumes necessary, 1970, 2012, 2013, 2014, and the year where he decides to settle down his life with Peggy. He can probably plan an efficient way of doing it, but if he needs to jump at least five times in the past, that means he should have three or six vials of Pym particles. Like I said before, it’s unclear if one Pym container is enough for a round trip, or if a particular trip requires a new vial. The film does not show them exchanging vials, so I’d say that each bottle is suitable for one round journey.
We also know that Steve stole four Pym particle vials from 1970 out of the 11 we see in Hank’s lab. Stark needed one, which leaves Captain with three others. Now, he uses one to return to 2023 from 1970, so he has two extras. That means, best-case scenario, he has five journeys left with five half-vials. Worst case scenario, two Pym particles get him only two journeys. It sure looks like Captain might need more Pym particles to get the mission finished. Either that or the reasons he won’t make it back to 2023 is that because he ran out of resources.
But, if you think about it, with Hank alive, they could have made as many Pym particles vials as needed.
When Tony Stark took the Space Stone from S.H.I.E.L.D. in 1970, it still had the same cube Tesseract form we’ve grown to know. But when Captain takes it back, the Space Stone is placed in a suitcase. But the main problem is how exactly is Captain going to turn it back into a Tesseract-like cube? It’s a simple detail, but one that matters. It’s one detail that could generate a brand new timeline back in 1970, one where S.H.I.E.L.D. finds out that the Tesseract cube was an Infinity Stone long before they are supposed to. Maybe this is the timeline where Cap settles down with Peggy.
Life without Infinity Stones
The Ancient One told Prof. Hulk when he asked to obtain the Time Stone that:
If I give up the time stone to help your reality, I’m dooming my own. […]
The Infinity Stones create what you experience as the flow of time. Remove one of the stones, and that flow splits, now this may benefit your reality, but my new one, not so much. In this new branch reality, without our chief weapon against the forces of darkness, our world will be overrun, millions would suffer. So tell me, doctor, can your science prevent all that?
The Ancient One was thinking, of course, mostly for the Time Stone, which is one of the essential weapons for a Sorcerer Supreme to posses. It wasn’t a mere coincidence that she was wearing Eye of Agamotto during the Battle of New York.
But if everything The Ancient One told us about the Infinity Stones is true then how is our current MCU-timeline going to survive without Infinity Stones? Let’s not forget that Thanos destroyed them five years ago before he was killed, yet the world was left standing. Marvel has to tell us what happens down the road in a timeline which doesn’t possess any Infinity Stones. Not to mention that Doctor Strange will seemingly won’t have a Time Stone in Doctor Strange 2.
It would be interesting to see Captain returning the Soul Stone to Vormir.
More seriously, this would be the first time that someone ever returned a Stone voluntarily. Whatever the case, the Soul Stone needs to be returned, because these Infinity Stones are crucial for the existence of each timeline.
Captain America’s shield
Let’s stick with Captain, because we have no idea where his shield which he gave to Falcon at the end came from. Yes, Rogers had one made or he brought it from a different timeline. Marvel didn’t explain how he got himself a new shield, but it’s clear that they want to keep the Captain America role in place.