A lot of precautions are taken on the set of big movies to make sure things don’t leak too early.
However, frequently this means the actors aren’t even given the whole story of the movie they’re in to be sure they don’t accidentally talk.
While this certainly has the potential to make things difficult for an actor trying to give a performance with only partial information, Don Cheadle told our own Sean O’Connell on the set of Avengers: Infinity War that he doesn’t mind it so much.