Q: It's 5am, and Jeremy has been up all night. He is leaving in 7 hours for Washington, DC, where he will be giving a presentation. It must be that he's been up all night working on his presentation, right?
A: Wrong. The last two hours and change he's spent dealing with an annoying configuration problem between his desktop and laptop machines whose solution required upgrading both to Windows XP (!). Earlier he was catching up on e-mail.