During his lifetime, Buckminster Fuller was hailed as one of the greatest geniuses of the twentieth century. As the architectural designer, inventor, and futurist best known for the geodesic dome, Fuller enthralled a vast popular audience, inspired devotion from both the counterculture and the establishment, and was praised as a modern Leonardo da Vinci. Using a design strategy based on geometry, he became convinced that it was possible to provide for all humanity through the efficient use of planetary resources, which he embodied in the image of Spaceship Earth. From Epcot Center to the molecule named in his honor as the buckyball, Fuller’s legacy endures to this day, and his belief in the transformative potential of technology profoundly influenced the founders of Silicon Valley.