The tool should have been straightforward. It was, in theory, simple enough to be used by a marketing manager. At least, that’s what my coworkers said—a blessing upon modern software. For years, the catchphrase had been So easy, your mother could use it, but this had grown uncouth and politically incorrect, to be used only in meetings where women weren’t present, of which there were plenty. But our users were endlessly creative in their ability to implement it incorrectly. They activated their own code, only to find that ours was silent, unresponsive. They checked their dashboards, refreshed and restarted their browsers. Then they would email, angrily.