Is the brain good at multi-tasking ?

The brain is a multi-tasking machine. We are able to talk and move and think at the same time. But maybe we're not that good at it. And the speed of our modern technology might make it more apparent.

"I remember a visiting senior computer scientist from another country got very angry about it," says Levy. "He said programming requires focus and shouldn't be interrupted. He basically said, 'You call this the future!' "