The Terminal Experiment

Validate hypotheses with Lean Experiments so that you can Pivot, Patch, or Persevere on your way to Product/Market Fit.


To achieve Product/Market fit, lean experiments to validate your business hypothesis seem to be needed. While running the experiments, you will navigate through a path full of pivots and patches. This chapter will help you understand this path until the moment when your customers will be ripping the product out of your hands.

  • Lean
  • Product/market fit
  • Experiments
  • Hypothesis
  • business quilt
Practices Explained

Lean Experiments

Minimum Viable Product

Pivot, Patch & Persevere

Strategy Meetings

Practices Mentioned

Coming Soon!


A Real Pivot… Happy Melly Group 


Chapter 10 Illustrations

Recommended Tools

Test Cards 

Test Idea Framework

Experiment Card

Recommended Books

The Lean Startup: How Today’s Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses by Eric Ries

Lean Analytics: Use Data to Build a Better Startup Faster by Alistair Croll, Benjamin Yoskovitz

The Innovator’s Method: Bringing the Lean Start-up into Your Organization by Nathan Furr, Jeff Dyer

Recommended Articles

Pivot or Persevere? Find Out Using Lean Experiments

The 7 Habits for Running Highly Effective Lean Startup Experiments

Why Startups are Agile and Opportunistic – Pivoting the Business Model

Product/market fit

The Taxonomy of the Lean Startup Pivot

Pivot or Persevere? The Key to Startup Success

Startup Jargon Series: PIVOTS

12 Things about Product-Market Fit

The Product Market Fit Cycle

Assumption vs. Hypothesis — To the Death!