Science and technology

Associated Press
FILE - In this Feb. 20, 2013 file photo, Mark Cerny, lead system architect for the Sony Playstation 4 speaks during an event to announce the new video game console, in New York.  The schedule for the 2013 GDC held March 25-29, in San Francisco, illustrates the dramatic changes that have reshaped the gaming industry in recent years, an evolution that's as much about business models as it is about pixels. Sony is angling to reignite developers' enthusiasm with the PlayStation 4.  (AP Photo/Frank Franklin II, File)

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