In this lecture, Matthew Kirschenbaum considers textual stability, a concern of publishers and readers since before the advent of printing, in the post-digital era. Books are not dead as was once feared. But they are not the same either. With digital processes and workflows now thoroughly integrated into the art and industry of publishing and printing them, books are altered by the post-digital moment in which we have arrived. Matthew Kirschenbaum’s lecture will pay particular attention to questions of textual stability, a concern of publishers and readers since before the advent of printing. How stable are texts when the book is now manifest as a collection of digital assets, a network which only might, at times, assume the physical and tangible form of the familiar codex?