The Mom Test

Metadata

The Book in 3 Sentences

• Ask about real behavior, not opinions. Past actions reveal truth; future promises don’t.
• Look for pain and commitment. Compliments are meaningless—money, time, or effort signal real demand.
• Don’t pitch your idea too early. Stay curious about the problem before defending a solution.

How the Book Changed Me

• I was in the midst of doing user interviews to discover pain points, which started with fairly loose format. Even though I had experience with interviews and I was aware of the basics of interviews like not bringing in biases, etc. it was nice to be reminded of the basics of user interview.

My Top 3 Quotes

• People will lie to you if they think it’s what you want to hear.
• Compliments are the fool’s gold of customer validation.
• Anything involving the future is an over-optimistic lie.
• The more you’re talking, the worse the conversation is going.

Summary + Notes

• The Mom Test If you ask, “Would you use this?” people will say yes. Instead, ask about their past behavior, not future opinions.

Bad: “Would you buy this?” Good: “How are you solving this today?”

→ Opinions are useless. Facts about behavior matter.

• Compliments are dangerous. Instead, look for commitment or existing pain.
• Ask About Specifics. Ask:
• Don’t Pitch Too Early; don’t bias the conversation by describing your idea

→ Stay curious, not persuasive.

• Look for Emotional Signals

→ You need painful problems, not interesting ones.

• Validation is when someone:

→ Everything else is politeness.

• You must be willing to kill ideas quickly if data contradicts them.
• Go in with:
• Don’t wait for formal interviews. Have casual conversations in real environments where the problem happens.