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Workers at the Control Center During Alpha's Launch

Inside the launch of Stephen Wolfram’s new “computational knowledge engine.”

Slideshow: Staffers near Champaign, IL, man the control center during Alpha’s launch.
Slideshow: Staffers hard at work.
Slideshow: Knowledge workers at the control center.
Slideshow: Although users’ queries often elicited the reply Wolfram Alpha isn’t sure what to do with your input, the site’s strong graphical presentation of numerical data highlighted an important but elusive goal of Web search.
Slideshow: Stephen Wolfram displays a mobile interface.
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