The year is 2069. I am watching a beautiful sunset from a floating porch 5,000 feet off the ground, and my bright-eyed granddaughter hoverboards up to join me. She is fascinated by the ancient history I’ve lived through, specifically the Great Metavolution, as we now call it. “Grandma,” she says, “tell me again how you made it out of the basement those bad guys put you in. How did you even survive without ultra-high-speed internet beamed from towers on the moon?” “Ah, right, the Faraday cage,...