In twenty years, when I glide through a furniture store on a hoverboard that actually hovers, as  the built-in virtual assistant recommends I lease their velvet three piece suite using my annual furniture subscription, it won’t be the fact that they’ve hired in a famous DJ for my auditory enjoyment that gets me to purchase.And it won’t even be the champagne that comes raining down from the rooftop in 15 minute intervals. It’ll be the fact that the hoverboard assistant has remembered how much I admired those lovely velvet sofas three years before, but worried my kids would damage them.…

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