Leveling the Playing Field explores the technologies that “trickle down” to the rest of us, those that were once the domain of the wealthy and powerful--and which therefore tended to make them even more wealthy and powerful. Now, though, these technologies--from books to computers to 3D printing and beyond--have become part of a common toolkit, one accessible to almost anyone, or at least to many more than had heretofore had access. This is what happens with most technologies: They begin in the hands of the few, and they end up in the hands of the many. Along the way, they sometimes transform the world.