Rob Fitzpatrick Mom Test Interview Sprint

Validate business ideas using the Rob Fitzpatrick Mom Test interview routine. Extract past facts and genuine commitments without pitching.

5 time blocks, 70 minutes in total.

Time blocks

Identify Core Risk Hypotheses: 10 min
Write down the three biggest unknown risks facing your idea
Draft Past-Focused Questions: 10 min
Frame questions around concrete past actions instead of opinions
Execute Unbiased Customer Interview: 30 min
Ask about past behavior and current solutions without pitching
Log Facts and Commitments: 10 min
Extract specific quotes, dollars spent, and historical facts
Update Customer Risk Hypotheses: 10 min
Adjust your core assumptions based on evidence rather than compliments

About this routine

The Rob Fitzpatrick Mom Test interview routine provides a structured framework for asking customer questions that yield reliable facts instead of polite compliments. Most early business ideas fail because founders ask leading questions such as whether someone would buy a theoretical product. Rob Fitzpatrick created a method centered on asking about concrete past actions, current workarounds, and actual money spent.

This 70 minute interview sprint breaks the validation process into three focused phases: hypothesis definition, the live conversation, and immediate synthesis. By eliminating product pitches and hypothetical opinions during the session, you gather clear signal about whether a real problem exists.

Following a structured workflow keeps customer validation objective and repeatable across multiple conversations. Reviewing notes immediately after each call prevents memory decay and ensures your product roadmap responds to real evidence.

Why this routine works

Prevents false validation from polite compliments
Focuses customer conversations on actual past behavior and spending
Uncovers true pain points and existing manual workarounds
Speeds up business decisions with real qualitative data

FAQ

What is the main rule of the Mom Test interview?

Talk about the customer's life and habits instead of your idea. Focus on specific past events rather than hypothetical opinions about the future.

How long should a Mom Test customer interview take?

Conversations typically last 15 to 30 minutes to keep discussions focused on specific past actions and workarounds.

Why should you avoid pitching your product during validation?

Pitching invites polite compliments and false positive feedback, which hides whether a real problem actually exists.

Sources

The Mom Test by Rob Fitzpatrick