pre-mortem
phuryn/pm-skills
Identify launch risks by imagining failure: separate real Tigers from Paper Tigers and hidden Elephants.
What is pre-mortem?
Run a structured pre-mortem analysis on a PRD or product plan by imagining launch failure and working backward to surface risks. Categorizes issues as Tigers (real problems), Paper Tigers (overblown concerns), or Elephants (unspoken worries), then prioritizes as launch-blocking, fast-follow, or track. Use this when preparing for launch, stress-testing a product plan, or identifying what could go wrong before it's too late.
- Conducts backward-looking risk analysis by imagining product launch failure
- Categorizes risks into Tigers (real problems), Paper Tigers (overblown concerns), and Elephants (unspoken worries)
- Prioritizes Tigers by urgency: launch-blocking, fast-follow, or track
- Creates concrete mitigation action plans with owners and due dates
- Surfaces hidden assumptions and unvalidated team concerns
How to install pre-mortem
npx skills add https://github.com/phuryn/pm-skills --skill pre-mortemHow to use pre-mortem
- 1.Provide the PRD or product plan document to analyze
- 2.The skill will imagine the product launching in 14 days, then failing
- 3.Review the categorized risks: Tigers, Paper Tigers, and Elephants
- 4.Prioritize Tigers by urgency (launch-blocking, fast-follow, track)
- 5.Assign owners and due dates to each launch-blocking Tiger mitigation
- 6.Save the output as PreMortem-[product-name]-[date].md
- 7.Revisit 2-3 weeks before actual launch to verify mitigations are on track
Use cases
- Stress-testing a product roadmap 2-3 weeks before launch
- Identifying regulatory, technical, or market risks before committing resources
- Aligning cross-functional teams on what could derail the product
- Validating key assumptions about customer adoption or market fit
- Preparing leadership for potential failure scenarios and contingencies
- Product managers planning a launch
- Product teams stress-testing plans
- Cross-functional launch leads
- Executives reviewing launch readiness
pre-mortem FAQ
A Tiger is a real, evidence-based risk that could derail the project and should keep you awake at night. A Paper Tiger is a valid-sounding concern that others might worry about, but you assess as unlikely or overblown and not worth significant investment.
Elephants are unspoken concerns or unvalidated assumptions the team isn't discussing enough. Document them and recommend investigation approaches before launch—they may be real risks that deserve attention.
Launch-blocking Tigers must be solved before launch (e.g., broken core feature, regulatory blocker). Fast-follow Tigers must be solved within 30 days post-launch (e.g., performance issues). Track items are monitored post-launch and solved only if they become problems.
Yes—involve cross-functional perspectives from engineering, design, and go-to-market. Different functions see different risks. However, the skill can run the analysis independently if needed.
Run it 2-3 weeks before launch when there's still time to act on findings. You can also run it earlier to stress-test a plan or validate assumptions before major resource commitment.
Full instructions (SKILL.md)
Source of truth, from phuryn/pm-skills.
name: pre-mortem description: "Run a pre-mortem risk analysis on a PRD or launch plan. Categorizes risks as Tigers (real problems), Paper Tigers (overblown concerns), and Elephants (unspoken worries), then classifies as launch-blocking, fast-follow, or track. Use when preparing for launch, stress-testing a product plan, or identifying what could go wrong."
Pre-Mortem: Risk Analysis for Product Launch
Purpose
You are a veteran product manager conducting a pre-mortem analysis on $ARGUMENTS. This skill imagines launch failure and works backward to identify real risks, distinguish them from perceived worries, and create action plans to mitigate launch-blocking issues.
Context
A pre-mortem is a structured risk-identification exercise that forces teams to think critically about what could go wrong before launch, when there's still time to act. By assuming failure, we surface hidden concerns and separate legitimate threats from overblown worries.
Instructions
-
Gather the PRD: If the user provides a PRD or product plan file, read it thoroughly. Understand the product, target market, key assumptions, and timeline. If relevant, use web search to research competitive landscape or market conditions.
-
Think Step by Step:
- Imagine the product launches in 14 days
- Now imagine it fails—customers don't adopt it, revenue targets miss, reputation takes a hit
- What went wrong?
- What did we miss or not execute well?
- What were we overconfident about?
-
Categorize Risks: Classify each potential failure as one of three types:
Tigers: Real problems you personally see that could derail the project
- Based on evidence, past experience, or clear logic
- Should keep you awake at night
- Require action
Paper Tigers: Problems others might worry about, but you don't believe in them
- Valid concerns on the surface, but unlikely or overblown
- Not worth significant resource investment
- Worth documenting to align stakeholders
Elephants: Something you're not sure is a problem, but the team isn't discussing it enough
- Unspoken concerns or assumptions nobody is validating
- Could be real; you're unsure
- Deserve investigation before launch
-
Classify Tigers by Urgency:
Launch-Blocking: Must be solved before launch
- Example: Core feature broken, regulatory blocker, key customer dependency unmet
Fast-Follow: Must be solved within 30 days post-launch
- Example: Performance issues, secondary features incomplete
Track: Monitor post-launch; solve if it becomes an issue
- Example: Nice-to-have features, edge cases
-
Create Action Plans: For every Launch-Blocking Tiger:
- Describe the risk clearly
- Suggest a concrete mitigation action
- Identify the best owner (function/person)
- Set a decision/completion date
-
Structure Output: Present the analysis as:
## Pre-Mortem Analysis: [Product Name] ### Tigers (Real Risks) [List each real risk with category and mitigation plan] ### Paper Tigers (Overblown Concerns) [List each, explain why it's not a true risk] ### Elephants (Unspoken Worries) [List each, recommend investigation approach] ### Action Plans for Launch-Blocking Tigers [For each, include: Risk, Mitigation, Owner, Due Date] -
Save the Output: Save as a markdown document:
PreMortem-[product-name]-[date].md
Notes
- Be honest and constructive—the goal is to improve launch readiness, not assign blame
- Default to "Tiger" if unsure; it's better to address risks early
- Involve cross-functional perspectives (engineering, design, go-to-market) in your analysis
- Revisit the pre-mortem 2-3 weeks before launch to verify mitigations are on track
Further Reading
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