Rob245

Answer: They don't. Movies and especially television shows often depict the legal and judicial systems in the United States as moving very quickly, despite the fact that, in reality, the wheels of justice turn very slowly.

Phaneron

Answer: To add to the other answers, in the U.S. the average time on death row before execution is close to 20 years due to lengthy appeals, legal challenges, evolving state policies, and complex judicial processes. In modern times, it never happens as it does in movies and TV.

raywest

Answer: Time passes quickly. It doesn't show every minute of every day. When he was executed, several months, maybe a couple of years, had gone by. They wanted to show him finally deducing that Clark Kent was Superman.