In Gates’s future world, paper becomes a thing of the past and there are no textbooks, no magazines and (from 50 years or so hence) no newspapers. Instead we will carry an object he calls the tablet, a slim device like a clipboard that will cater for all our information and entertainment needs and will revolutionise our lives within a decade. […] we will have screens, on the walls of our homes, that will recognise our voices and take commands. We will be able to take pictures of barcodes in shops and be informed whether we are being offered a fair price. And we will communicate through fingerprint recognition with cameras in public places, feeding them information that will be stored on our computers at home.

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