The One-Line Vow in Practice: The Vow at the Dinner Table
Benjamín is a father of two in Santiago — a daughter of fifteen, a son of eleven — and the week that broke his patience was an ordinary one. His daughter’s school sent home a new AI-homework policy written in the tone of a customs declaration. His son had discovered a chatbot that would talk about dinosaurs for four hours. His own office had quietly started expecting AI-drafted reports in half the time. And his mother had received one of those phone calls — a cloned voice, almost right — that end with a family group chat full of warnings. AI had entered the household the way weather enters a house: through every window at once, invited by no one.
His first instinct was rules. He is a father; rules are the tool that comes with the job. But Chapter 13 of the book argues for something structurally different when private promises keep evaporating: the One-Line Vow — a public commitment in a simple format, “I will use AI to ___ so that ___,” with the first blank holding your specific action and the second your human-centered purpose. The radical part, for a parent, is the word public — and who it includes. A rule is something parents impose. A vow is something everyone takes, out loud, parents first.
So: Sunday dinner, four pieces of paper, one format, everyone writes, everyone reads aloud. No edits to anyone else’s.
His daughter went first, with the precision of a fifteen-year-old who has already thought three moves ahead:
I will use AI to check my math and explain what I got wrong, so that the grade is still mine.
The second clause — so that the grade is still mine — did more than any school policy had managed, because she wrote it herself, which meant she now owned the boundary she’d have litigated forever had he drawn it.
His son:
I will use AI to look up dinosaur facts to put in my own stories, so that the stories are still mine and Lucas the dog can be in them.
The family ruled this valid on all counts. His wife:
I will use AI to translate the first drafts of my emails to the Zurich office, so that I spend my evenings with these three people instead of with a dictionary.
And Benjamín, who had drafted two impressive vows about responsible technological citizenship and thrown both away:
I will use AI to draft the boring parts of my reports, so that I get home in time for this dinner.
His daughter pointed out, correctly and mercilessly, that this one was measurable.
The book’s mechanism worked exactly as advertised: tell at least three people who will hold you accountable, and the private intention becomes shared commitment. In a family of four, the arithmetic is automatic — everyone’s three witnesses live in the house. The refrigerator now holds four vows in four handwritings, and enforcement, it turns out, flows in every direction: the children police the father’s home-by-dinner clause with a joy that borders on the unseemly. Lo prometido es deuda, his mother said when she was shown the refrigerator — what’s promised is a debt. The proverb is now the house’s unofficial fifth vow.
Each vow is a small rebellion against passive AI consumption — a choice to engage with purpose. Benjamín’s version, offered over the dishes: the vows didn’t give the family rules about the machines. They gave the family witnesses — which, he suspects, is what everyone in the house actually wanted from each other all along.
Benjamín and his family are composites — drawn from conversations with parents navigating AI at home, with details changed. The dog’s name has been preserved by request of the composite.
Try it yourself
The format is one line: “I will use AI to ___ so that ___.” Specific enough to guide daily choices, open enough to evolve. Write yours — and if you live with people, write them together, everyone including the adults, read aloud, no edits to anyone else’s. Then put them where the household actually looks. Three witnesses turn an intention into a commitment; a refrigerator turns it into a constitution.
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