sl4shd0rk writes "A lot of people think talking on the cell phone while driving is natural, but each time someone asks a question or changes the subject, it's like taking on a new task, Psychologists who study multi-tasking have argued for years about whether these "information bottlenecks" occur because people are inherently lazy, or because they have a fundamental inability to switch from one task to another. Mei-Ching Lien, an assistant professor of psychology at Oregon State University. "Even with a seemingly simple task, structural cognitive limitations can prevent you from efficiently switching to a new task." I have to say that the best ones are those who play a lot of video games," she pointed out. "Those are lab studies, however, and not driving tests." " All I know is that I could get where I was going better if I could shoot turtles at others on the highway.