But the examples you give are examples of it working because they are different kinds of moments in the show. It's not Judas in context of the story saying to Jesus "Israel in 4BC has no mass communication" as if it makes sense to be said. In Evita, Eva is not outside the story or context of the scene, she is in it and talking to another character in it. She's not commenting on it or stepping outside of it or speaking to the audience or speaking after her death.
