Sure, I use a computer as the essential tool for making my daily bread and butter.

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It snaps into a USB port in the computer and acts as an authentication tool without which the user cannot access the files.

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Increasingly doctors can use computer programmes based on statistical data as a tool for diagnosis but is this always the right way to treat a patient?

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Today, one in three people in the U.S. use their mobile device as their primary tool to access the internet, rather than a laptop or desktop computer.

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Imagine a computer so simple and user friendly as to appear next to the oven and Kitchen Aid mixer, a tool that you could integrate into your everyday life.

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And so I came to suspect that the only truly believable computer program would be one able to ape life itself, since thinking as we know it exists only as a purposive tool of living organisms.

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