Here's a thought-provoking article on the benefits/costs of multi-media & multi-tasking. A sampling:
"One of the deepest questions in this field is whether media multitasking is driven by a desire for new information or by an avoidance of existing information. Are people in these settings multitasking because the other media are alluring—that is, they're really dying to play Freecell or read Facebook or shop on eBay—or is it just an aversion to the task at hand?"
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