Before building anything, you need to know if the problem is real. This guide walks you through rapid validation methods, customer interviews, and simple experiments to test demand — all within a week. Index 1. Day 1: Define the Problem Clearly 2. Day 2: Identify and Reach Out to Potential Users 3. Day 3: Interview Users (Listen, Don’t Pitch) 4. Day 4: Create a Simple Landing Page 5. Day 5: Bring Traffic to the Page 6. Day 6: Measure Interest and Analyze Insights 7. Day