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"The man challenged everyone's thinking," says , Google's chief Internet evangelist, in an interview with Network World. "He was so early in the history of computing, and yet so incredibly visionary about it."
Cerf -- who is president-elect of the Association for Computing Machinery and general chair of that organization's effort to celebrate the upcoming 100th anniversary of Turing's birth on June 23 -- says that it's tough to overstate the importance of Turing's role in shaping the world of modern computing.
"Alan had such a broad impact on so many aspects of computer science," says Cerf. "The deep notion of computability is so fundamental to everything we do in computing."