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40 years ago you could open the hood of your car and see and touch just about every component in there. And you had to, because many of those components required frequent maintenance. To properly own a car required, to some degree, that you understood how a car worked. Today, you open the hood of your car and you see a big sealed block and a basin for the windshield washer fluid. You can buy a new car, drive it for years, and never once open the hood yourself.

That’s the iPad.

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