“When I was little, my friends would get so excited when I told them that my parents did most of their scientific work at home, and they’d come in for the first time looking around for bubbling beakers or dynamos or whatever devices sci-fi shows had taught them to expect. What it mostly means is papers piled on every flat surface. Sure, lately we’ve had a few gadgets, but only a few. Nobody wants to hear that theoretical physics has less to do with shiny lasery stuff and more to do with numbers.”