Our world has changed a lot.

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But text is just one small piece of how our world has been changed by technology.

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Back to my 1982 essay: predictions about future society populated by personal robots have been around nearly a century, yet much of our world has not changed that dramatically.

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Our economy has fundamentally changed -- as has the world -- but our government, our agencies, have not.

WHITEHOUSE: President Obama Speaks on Consolidating Government Departments to Encourage Business | The White House

By the time we get through collecting and analyzing data and creating plans to deal with the imagined scenario, the world has changed to the point that our data may already be obsolete.

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Online transactions have changed the nature of our world, as has regulation.

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Although much has changed since 1961, our mission to promote world peace and friendship through service remains the same.

WHITEHOUSE: Commemorating 50 Years of Peace and Friendship Through Service | The White House