Notes on The Mom Test

Notes on The Mom Test Rob Fitzpatrick's short, unglamorous manual for talking to customers when everyone around you is being polite. Its argument: the problem was never that people lie to you — it's that you ask questions that invite lying. Rob Fitzpatrick · self-published, 2013 ~130 pages momtestbook.com Most advice about customer interviews tells you to go talk to people. The Mom Test starts one step earlier, with an uncomfortable observation: founders have been talking to people, and coming back with encouraging news that turns out to be worthless. Rooms full of nodding. Emails full of "let me know when it launches." Then a launch, and silence. Fitzpatrick's diagnosis is that the failure sits with the interviewer, not the interviewee. Asking someone whether your idea is good is asking them to guess about the future while also managing your feelings — a task no human does honestly. So the book proposes a test you can run on your own questions before you ever open your mouth. A good question is one your mother could not lie to you about. The test the book is named for The failure mode What a bad conversation sounds like The book opens with a founder pitching a cookbook app for the iPad to his mother. It is worth reading slowly, because almost every founder has had this exact conversation and walked away happy. Son Mom, I've got an idea for an app. Would you buy an app that was a cookbook for the iPad? Mom Sure, honey. That sounds nice. Son And you'd pay, like, $40 for it? Because it does everything your old cookbooks do? Mom Well… maybe. Would there be pictures? He leaves with a customer, a price point, and a feature request. He has none of these. She does not own an iPad, has never bought an app, and would agree to almost anything to be supportive. Every answer she gave was a compliment wearing a data costume. The insight underneath is that the moment you describe your idea, you've told the other person which answer will make you happy. Everything after that is contaminated. You cannot un-ring the bell mid-conversation, which is why the book's remedies are almost all about what you do before you mention what you're building. The core The three rules Rule 1 Talk about their life, not your idea. Their existing routines, frustrations, and workarounds are facts you can verify. Your idea is a hypothetical you're asking them to rate. Rule 2 Ask about specifics in the past, not generics or opinions about the future. "What did you do last time this happened?" produces evidence. "Would you use something like this?" produces optimism. Anything set in the future is, in the book's phrasing, an over-optimistic lie. Rule 3 Talk less and listen more. A conversation you dominate is a pitch with extra steps. If you're doing most of the talking, you're paying for the meeting and collecting nothing. Everything else in the book is a consequence of these three. Notably, none of them require you to keep your idea secret or