 have to do with the buzz, buzz, buzz, buzz, buzz of computers. I don't have to tell you that. You've got cashiers that can't make change of a $10 bill if the computer doesn't tell them how much it is. Forget about it. And that's just a rudimentary example of how reliant we are on systems, and particularly when it comes to travel. So it turns out this morning the lights are off, and a lot of places can't function, and a lot of passengers are stranded.