🧪 Day 4
Prototyping to Look for First Signals
Nov 26, 2026
Today you will design the simplest test that shows real customer interest.
Reading from Imaguru
Basics of prototyping and a basic metric/event-tracking plan; from qualitative evidence to prioritised requirements, metrics and acceptance criteria.
What the experts cover
- Marcin (10 min): What first signal suggests customer interest; the simplest test that shows it (e.g. fake-door test); what user flow the test needs.
- Andrew (10 min): The power of metrics and hypothesis tests; what success means for the product and the project.
- Vitalijs (10 min): Converting qualitative evidence into formal, prioritised functional requirements, metrics and acceptance criteria; tool overview.
Tools & templates
- Examples of tests (fake door)
- User-flow / specification template
- Lovable, Codex, Claude prototype-tool overview
- AxWise