Shahzad came to the United States and attended college, earning a bachelor's degree in computer applications and information systems from Connecticut's University of Bridgeport in 2000.

CNN: STORY HIGHLIGHTS

Mr. Page's comments come one day before the start of Google's annual conference in San Francisco for software developers who create applications for Google's Android and Chrome computer-operating systems.

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Software now covers a maze of different industries, including applications software, operating systems, databases, the Internet, computer-aided design and networking.

ECONOMIST: Silicon Valley

Uncertainty quantification, or "UQ, " is the quantitative characterization and reduction of uncertainty in computer applications through running very large suites of calculations to characterize the effects of minor differences in the systems.

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