“The personal computer’s radical reshaping of the revision process is likely another reason why writers sometimes struggle to understand revision,” writes Peter Ho Davies in the first chapter of The Art of Revision: The Last Word (Graywolf Press, 2021), an excerpt of which is published on our website. In this chapter titled “Black Box,” Davies discusses the elusive and often misunderstood nature of the revision process, and explores the reasons why it is often neglected as a subject in creative writing classrooms. Write an essay that recounts a particularly arduous time you had revising a piece of work. What did you learn in the time between your first and last draft?