Hello Barbie, shown above at the North American International Toy Fair in New York, is an interactive doll designed to have conversations with children. Author Sherry Turkle says the Barbie is an example of "robotic companionship." Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP

The tables are set in the State Dining Room of the White House for Friday's state dinner honoring visiting Chinese President Xi Jinping. Manuel Balce Ceneta/AP hide caption

itoggle caption Manuel Balce Ceneta/AP

A person plays Candy Crush Saga on his tablet in Lille, northern France. This year, mobile games revenues are expected to fly past console games and hit more than $30 billion worldwide. Philippe Hugen /AFP/Getty Images hide caption

itoggle caption Philippe Hugen /AFP/Getty Images