The Mom Test
How to Talk to Customers & Learn If Your Business Is a Good Idea When Everyone Is Lying to You
by Rob Fitzpatrick
Editorial review
A short, almost embarrassingly practical book on the most common reason early-stage startups fail: they ask the wrong questions and believe the polite answers. Fitzpatrick's rules can be implemented the same week you read them.
AI-generated summary
Rob Fitzpatrick provides a tactical guide to running customer conversations that yield reliable signal — by asking about specific past behavior rather than future intent, by probing for actual workarounds, and by avoiding the 'compliment trap' that misleads early founders.
Key takeaways
- 1
Don't ask if your idea is good — ask about specifics from the customer's life.
- 2
Talk about their problem and what they have actually done about it.
- 3
Compliments are not data; commitments and currency are.
- 4
Most 'customer development' fails because the questions were leading.
The right reader
Every first-time founder before their first customer interview. Re-read every six months.
What it touches
How it reads
Short, useful, unpretentious.
Reading difficulty: Accessible
