After a scary movie about the world almost ending, we can...

After a scary movie about the world almost ending, we can walk into the sunlight and say, "Wow, everything's still here. I'm OK!" We like to tease ourselves. Human beings have a need to get close to the edge, and when filmmakers or writers can take them to the edge, it feels like a dream where you're falling, but you wake up just before you hit the ground.