Now that Captain Marvel has completed its first weekend in theaters, the attention of the MCU fanbase is shifting more than ever to next month’s Avengers: Endgame and the many questions we still have about the Phase 3 finale.
As it stands, Marvel Studios has released less than 3 minutes of (possibly altered) footage from the Avengers: Infinity War sequel, but among the few scraps of unambiguous info that the film’s first trailer provides is that Tony Stark is going to find himself stuck aboard the Benatar and on the brink of death.
In the preview released last December, Iron Man explicitly states that “food and water ran out four days ago,” but in a new post from Reddit user Ze11afe11a, the case is made that this contradicts a little tidbit provided in Iron Man 2. The post consists of a pair of screenshots from a scene in the 2010 film, in which Stark tells Pepper that the suit he’s wearing has a filtration system that can turn his urine into drinkable water.
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The implication from this post is that running out of water shouldn’t be a problem for Tony as he waits to be saved from the Benatar, though there’s plenty of reason to doubt that this is the “plot hole” that some fans are saying it is. For one thing, we don’t receive any indication that Stark’s filtration system recycles the water with 100% efficiency, and seeing how this is biologically impossible, we can probably assume that Tony’s body would lose at least a little liquid with each cycle and run out of water eventually.
Of course, most fans presumably have much bigger concerns on their minds than how long Iron Man can keep drinking his own urine for, but who knows, maybe this will be one of the many questions that Avengers: Endgame answers when it comes out on April 26th.