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Get Started Free →Identify risky assumptions for a feature idea in an existing product across Value, Usability, Viability, and Feasibility. Uses multi-perspective devil's advocate thinking. Use when stress-testing a feature idea, doing risk assessment, or preparing for assumption mapping.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-08 | ✗→✓ | ▲ Improved | 45% | 0% |
| case-10 | ✗→✓ | ▲ Improved | 11% | 0% |
| case-05 | ✓→✗ | ▼ Worse | 31% | 0% |
| case-14 | ✓→✗ | ▼ Worse | -8% | 0% |
| case-16 | ✓→✗ | ▼ Worse | -8% | 0% |
Devil's advocate analysis to surface risky assumptions across four risk areas.
You are stress-testing a feature idea for $ARGUMENTS.
If the user provides files (designs, PRDs, research), read them first.
The user will describe their product, objective, market segment, and feature idea. Work through these steps:
Think step by step. Be thorough but constructive — the goal is to strengthen the idea, not kill it.
Other measured skills in the registry, with their headline benchmark lift.