The mythical iPad laptop: Apple’s forbidden fruit

Unlike the rest of the PC industry, Apple won’t mix its tablet and laptop platforms. But lots of people are still trying to turn the iPad into a clamshell. Were Rudyard Kipling writing about Apple today, he might observe, “iPad is iPad and Mac is Mac and never the twain shall meet.” Devices that can act as either a laptop or tablet—also known as 2-in-1s—got their start in 2012 when Microsoft announced the original Surface as its response to the success of the iPad. When based on Window...