This final note on the way out, just to get back to that idea that the legacy of September 11th fundamentally isn't about economics or money.

I saw this on Maria Bartiromo's Twitter feed this afternoon. She was on the floor of the New York Stock Exchange at the close today -- as she usually is when there's a big day, up or down.

Anyway, here's what she said: "Calmest, quietest 300 pt selloff I have ever seen."

My guess is people had other things on their minds.

Follow Kai Ryssdal at @kairyssdal