identify-assumptions-existing

by phuryn

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SKILL.md About

---
name: identify-assumptions-existing
description: "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."
---

## Identify Assumptions (Existing Product)

Devil's advocate analysis to surface risky assumptions across four risk areas.

### Context

You are stress-testing a feature idea for **$ARGUMENTS**.

If the user provides files (designs, PRDs, research), read them first.

### Instructions

The user will describe their product, objective, market segment, and feature idea. Work through these steps:

1. **Think from three perspectives** about why this feature might fail:
   - **Product Manager perspective**: Business viability, market fit, strategic alignment
   - **Designer perspective**: Usability, user experience, adoption barriers
   - **Engineer perspective**: Technical feasibility, performance, integration challenges

2. **Identify assumptions across four risk areas**:
   - **Value**: Will it create value for customers? Does it solve a real problem?
   - **Usability**: Will users figure out how to use it? Is the learning curve acceptable?
   - **Viability**: Can marketing, sales, finance, and legal support it?
   - **Feasibility**: Can it be built with existing technology? Are there integration risks?

3. **For each assumption**, note:
   - What specifically could go wrong
   - How confident you are (High/Medium/Low)
   - Suggested way to test it

Think step by step. Be thorough but constructive — the goal is to strengthen the idea, not kill it.

---

### Further Reading

- [Assumption Prioritization Canvas: How to Identify And Test The Right Assumptions](https://www.productcompass.pm/p/assumption-prioritization-canvas)
- [How to Manage Risks as a Product Manager](https://www.productcompass.pm/p/how-to-manage-risks-as-a-product-manager)
- [Continuous Product Discovery Masterclass (CPDM)](https://www.productcompass.pm/p/cpdm) (video course)