It's not easy working with a piece of data that can kill you. But that's okay. In Reality, people work with dangerous substances all the time—radioactive isotopes and toxic chemicals. You just have to have the right tools: remote manipulator arms, gloves, goggles, leaded glass. And in Flatland, when you need a tool, you just sit down and write it. So Hiro starts by writing a few simple programs that enable him to manipulate the contents of the scroll without ever seeing it.