David Patrick Stearns weighs in on “Bellini’s less watchable, theatrically antiquated I Puritani,” the Metropolitan Opera’s second simulcast offering. “A lesson lies in some of those 3-D movies from the 1950s: Alfred Hitchcock’s Dial M for Murder is basically a stage play on film. That isn’t a problem with a 3-D print that puts you in the same room as the actors, but in a conventional print it’s as static as I Puritani. In present form, simulcasts are just a better variation on what came before. It’s still a relay medium.”