Most founders declare PMF prematurely based on early enthusiasm that evaporates within 90 days. This guide focuses on distinguishing genuine fit from polite feedback, using retention curves and qualitative depth interviews as the primary evidence.

1. Stop looking at acquisition metrics entirely for now

2. Find and deeply study your best 10 users

3. Run the 40% disappointment benchmark, honestly

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StartupsTipsguide

Updated 2026-03-28

Tips for Validating a Startup Idea Before Building

Startup idea validation fails when founders rely on interview enthusiasm instead of behavioral evidence. This guide focuses on getting observable evidence—signups, pre-sales, or observed behavior—that a problem is real and the solution is valued.

1. Write your riskiest assumption as a falsifiable statement

2. Conduct problem interviews, not solution interviews

3. Build a landing page and measure actual conversion, not reactions

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