The Shallows: What the Internet is Doing to Our Brains

by Nicholas Carr

WHEN A CARPENTER picks up a hammer, the hammer becomes, so far as his brain is concerned, part of his hand. When a soldier raises a pair of binoculars to his face, his brain sees through a new set of eyes, adapting instantaneously to a very different field of view. The experiments on pliers-wielding monkeys revealed how readily the plastic primate brain can incorporate tools into its sensory maps, making the artificial feel natural. In the human brain, that capacity has advanced far beyond what’s seen in even our closest primate cousins. Our ability to meld with all manner of tools is one of the qualities that most distinguishes us as a species. In combination with our superior cognitive skills, it’s what makes us so good at using new technologies. It’s also what makes us so good at inventing them. Our brains can imagine the mechanics and the benefits of using a new device before that device even exists. The evolution of our extraordinary mental capacity to blur the boundary between the internal and the external, the body and the instrument, was, says University of Oregon neuroscientist Scott Frey, “no doubt a fundamental step in the development of technology.”16