The Mom Test — Rob Fitzpatrick

*The Mom Test* by Rob Fitzpatrick is a practical guide to customer conversations. Its central argument is that most founders unknowingly run bad interviews — they pitch their idea and collect polite, useless validation. The fix is to stop talking about your idea entirely and instead dig into the interviewee's actual life, past behaviour, and real costs. [Reading Highlights.md]

"Talk about their life instead of your idea."

"Opinions are worthless. Anything involving the future is an over-optimistic lie."

[Reading Highlights.md]

• Ask about the past, not the future. What people *say* they would do is unreliable; what they *actually did* last week is evidence.
• Avoid pitching in disguise. Questions like "Would you use this?" invite flattery, not truth.
• Surface real costs. Ask what they've already tried, what it cost them in time or money, and how much the problem genuinely matters to them.
• The "Mom Test" rule: frame questions so that even your mom — who wants to be kind — couldn't mislead you, because you're only asking about verifiable facts.

[Reading Highlights.md]

The reader's takeaway is direct: stop pitching in customer interviews. Instead, ask about what the person actually did last week, what it cost them, and what they have already tried. [Reading Highlights.md]

The reader draws a cross-thread link to Deep Work — Cal Newport: both books are ultimately about honesty with yourself. *The Mom Test* demands honesty about whether people actually want the thing you're building, in the same way *Deep Work* demands honesty about where your attention truly goes. [Reading Highlights.md]

This shared theme is explored further on its own page: Comfortable Lies vs Useful Truths.

*Part of the Reading Highlights — Overview knowledge base. Source: [Reading Highlights.md].*