Use the live product
A prototype or demo can be useful earlier. After building, the strongest test is the real destination people would actually use.
Define one meaningful task
- Reach the app.
- Understand the goal.
- Complete the core action.
- Return with evidence.
- Explain what stopped or worked.
Reward participation, not praise
Read patterns, not one-off opinions
One reaction can be interesting. Repeated behavior across validated attempts is what starts turning into Signal.