We've seen all the theories. There's Scott Lang time traveling through the Quantum Realm. There's Doctor Strange casting a time loop spell on the Time Stone. There's all the Captain Marvel possibilities back in the '90s. But a new theory suggests that something entirely different is going on in the embattled Marvel Cinematic Universe.

What if no one actually died when Thanos snapped his fingers at the end of Avengers: Infinity War? Maybe he just sent everyone who turned to dust into an alternate universe.