The Lady or the Tiger? And, the Discourager of Hesitancy

In ancient times, a king devised a system of justice where guilt or innocence was determined entirely by chance. The system worked this way: When a man committed a crime important enough to interest the king, notice was given that the fate of the accused person would be decided, on a given date, in the arena of the amphitheater. When the date arrived and everyone had assembled in the galleries, the king gave a signal, a door beneath him opened, and the accused stepped out into the arena. Two doors, exactly alike and side by side, faced the accused, and it was his duty to open one of them. He could open either door he pleased. If he opened the one, a hungry tiger would spring upon him and tear him to pieces. But, if he opened the other door, a beautiful lady came out and the accused was immediately married to her, as a reward for his innocence.