For nearly 180 years, papal conclaves have chosen a new pope in three to five days. In centuries past, they've taken a lot longer.

Speculation surrounding a conclave to elect a pope is a time-honored tradition. But for the impending conclave following the death of Pope Francis, the ranks of armchair Vatican experts have swelled thanks to Hollywood.

Cardinals have no contact with the outside world after the master of liturgical ceremonies utters the words “Extra Omnes” the Latin phrase for “all out,” to ask all those present except the cardinal electors to leave the Sistine Chapel to begin the voting process.