Don't open if you feel like getting work done today.
"Sometimes, when I drive across the desert in the middle of the night, with no other cars around, I start imagining: What if there were no civilization out there? No cities, no factories, no people? And then I think: No people or factories? Then who made this car? And this highway? And I get so confused I have to stick my head out the window into the driving rain---unless there's lightning, because I could get struck on the head by a bolt."