Day 6: 6:00 AM - 7:00 AM - S6-E1
Jack Bauer: Do you understand the difference between dying for something and dying for nothing? The only reason I fought so hard to stay alive in China was because I didn't want to die for nothing. Today, I can die for something.
Chosen answer: Nobody knew, not even the writers, until at least halfway through the season when they were writing the end. They wanted to keep all options open.