Slow down, all you multitaskers

CNET News.com reports on how you can't do two things at once.

This in particular resonated with me:

"In a recent study, a group of Microsoft workers took, on average, 15 minutes to return to serious mental tasks, like writing reports or computer code, after responding to incoming e-mail or instant messages. They strayed off to reply to other messages or browse news, sports or entertainment Web sites."