With consumer demands always rising (for Retina Displays, faster processors, more memory, etc.), it may be impossible to turn the iPad Mini into an equally profitable device.

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For example, one day we might be able to design apps that allow people to probe their own cognitive abilities (processing speed, memory, decision-making, etc.) at any time during the day and track these abilities over the years, transmitting the results from their smartphones to a health care provider if desired.

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It is impossible to use a USB port for a printer, for a memory stick, to download pictures from a camera, etc.

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