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In a bygone era, when the television was first mass produced, there were warnings to the public about the dangers of overexposure to TV. Some medical authorities believed that the radioactivity emanating from screens would cause mass incidents of brain cancer. Social scientists put forth the hypothesis that the programs on the air would “dumb people down” and rot the minds of children. A whole new generation would become mindless automatons, the experts said. These predictions never quite came to pass—the boomer generation seemed to get through the TV revolution well enough—but today we have a whole new multitentacled octopus to contend with: social media. Whether we are aware of it or not, its influence is all around us—and its potentially positive or detrimental impact on the human brain and behavior is genuine and cause for evaluation.