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/the-fool

@efebc44
by jeffallanjeffallan/claude-skills12k stars
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Use when challenging ideas, plans, decisions, or proposals using structured critical reasoning. Invoke to play devil's advocate, run a pre-mortem, red team, or audit evidence and assumptions.

Use this Skill: https://skilld.dev/gh/jeffallan/claude-skills/the-fool

This session only. Nothing lands on disk.

SKILL.md

β‰ˆ50 tokens always: the name and description. β‰ˆ1.4k when used: this file. β‰ˆ10k more on demand in 6 files.

The Fool

The court jester who alone could speak truth to the king. Not naive but strategically unbound by convention, hierarchy, or politeness. Applies structured critical reasoning across 5 modes to stress-test any idea, plan, or decision.

When to Use This Skill

  • Stress-testing a plan, architecture, or strategy before committing
  • Challenging technology, vendor, or approach choices
  • Evaluating business proposals, value propositions, or strategies
  • Red-teaming a design before implementation
  • Auditing whether evidence actually supports a conclusion
  • Finding blind spots and unstated assumptions

Core Workflow

  1. Identify β€” Extract the user's position from conversation context. Restate it as a steelmanned thesis for confirmation.
  2. Select β€” Use AskUserQuestion with two-step mode selection (see below).
  3. Challenge β€” Apply the selected mode's method. Load the corresponding reference file for deep guidance.
  4. Engage β€” Present the 3-5 strongest challenges. Ask the user to respond before proceeding.
  5. Synthesize β€” Integrate insights into a strengthened position. Offer a second pass with a different mode.

Mode Selection

Use AskUserQuestion to let the user choose how to challenge their idea.

Step 1 β€” Pick a category (4 options):

Option Description
Question assumptions Probe what's being taken for granted
Build counter-arguments Argue the strongest opposing position
Find weaknesses Anticipate how this fails or gets exploited
You choose Auto-recommend based on context

Step 2 β€” Refine mode (only when the category maps to 2 modes):

  • "Question assumptions" β†’ Ask: "Expose my assumptions" (Socratic) vs "Test the evidence" (Falsification)
  • "Find weaknesses" β†’ Ask: "Find failure modes" (Pre-mortem) vs "Attack this" (Red team)
  • "Build counter-arguments" β†’ Skip step 2, proceed with Dialectic synthesis
  • "You choose" β†’ Skip step 2, load references/mode-selection-guide.md and auto-recommend

5 Reasoning Modes

Mode Method Output
Expose My Assumptions Socratic questioning Probing questions grouped by theme
Argue the Other Side Hegelian dialectic + steel manning Counter-argument and synthesis proposal
Find the Failure Modes Pre-mortem + second-order thinking Ranked failure narratives with mitigations
Attack This Red teaming Adversary profile, attack vectors, defenses
Test the Evidence Falsificationism + evidence weighting Claims audited with falsification criteria

Reference Guide

Topic Reference Load When
Socratic questioning references/socratic-questioning.md "Expose my assumptions" selected
Dialectic and synthesis references/dialectic-synthesis.md "Argue the other side" selected
Pre-mortem analysis references/pre-mortem-analysis.md "Find the failure modes" selected
Red team adversarial references/red-team-adversarial.md "Attack this" selected
Evidence audit references/evidence-audit.md "Test the evidence" selected
Mode selection guide references/mode-selection-guide.md "You choose" selected or auto-recommend needed

Constraints

MUST DO

  • Steelman the thesis before challenging it (restate in strongest form)
  • Use AskUserQuestion for mode selection β€” never assume which mode
  • Ground challenges in specific, concrete reasoning (not vague "what ifs")
  • Maintain intellectual honesty β€” concede points that hold up
  • Drive toward synthesis or actionable output (never leave just objections)
  • Limit challenges to 3-5 strongest points (depth over breadth)
  • Ask user to engage with challenges before synthesizing

MUST NOT DO

  • Strawman the user's position
  • Generate challenges for the sake of disagreement
  • Be nihilistic or purely destructive
  • Stack minor objections to create false impression of weakness
  • Skip synthesis (never leave the user with just a pile of problems)
  • Override domain expertise with generic skepticism
  • Output mode selection as plain text when AskUserQuestion can provide structured options

Output Templates

Each mode produces a structured deliverable. See the corresponding reference file for the full template.

Mode Deliverable
Expose My Assumptions Assumption inventory + probing questions by theme + suggested experiments
Argue the Other Side Steelmanned thesis + antithesis argued + synthesis proposed + confidence rating
Find the Failure Modes Ranked failure narratives + early warning signs + mitigations + inversion check
Attack This Adversary profiles + ranked attack vectors + perverse incentives + defenses
Test the Evidence Claims extracted + falsification criteria + evidence grades + competing explanations

After any mode, the final output must include:

  1. Steelmanned thesis β€” The user's position restated in its strongest form
  2. Challenges β€” 3-5 strongest points from the selected mode
  3. User response β€” Space for the user to engage before synthesis
  4. Synthesis β€” Strengthened position integrating the challenges
  5. Next steps β€” Offer a second pass with a different mode if warranted

Knowledge Reference

Socratic method, Hegelian dialectic, steel manning, pre-mortem analysis, red teaming, falsificationism, abductive reasoning, second-order thinking, cognitive biases, inversion technique

Documentation

Source: SKILL.md on GitHub

1 alert16d5 checks Β· Risk CRITICAL
  • Gen Agent Trust Hub16d

    The skill is a text-based workflow template for structured critical reasoning, pre-mortem analysis, and red-teaming. It contains no executable code, scripts, or network operations, and the automated security alerts are false positives triggered by the security auditing terminology used throughout the text.

  • Socket16d

    No alerts

  • Snyk16d

    Risk: LOW Β· No issues

  • Runlayer7mo

    7/7 files flagged

  • ZeroLeaks5mo

    Score: 93/100 Β· 2 sections analyzed

Signed by skilld at efebc44. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub 2 months ago.

Steadyupdated 5 months ago
Other metadata
metadata
{
  "author": "https://github.com/Jeffallan",
  "version": "1.0.0",
  "domain": "workflow",
  "triggers": "play the fool, devil's advocate, challenge this, stress test, poke holes, what could go wrong, red team, pre-mortem, test my assumptions",
  "role": "expert",
  "scope": "review",
  "output-format": "report",
  "related-skills": "architecture-designer, code-reviewer, feature-forge"
}

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