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in4-contra-logic

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Apply IN4 Contra-Logic to argue the opposite position to stress-test assumptions and expose weak reasoning.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/analysis/in4-contra-logic/SKILL.md

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IN4 Contra-Logic

Apply the IN4 Contra-Logic transformation to argue the opposite position to stress-test assumptions and expose weak reasoning.

What is IN4?

IN4 (Contra-Logic) Argue the opposite position to stress-test assumptions and expose weak reasoning.

When to Use IN4

Ideal Situations

  • Stress-test a plan by reversing assumptions
  • Identify risks by imagining failure states
  • Simplify outcomes by removing unnecessary elements

Trigger Questions

  • "How can we use Contra-Logic here?"
  • "What changes if we apply IN4 to this risk assessment for a launch?"
  • "Which assumptions does IN4 help us surface?"

The IN4 Process

Step 1: Define the focus

// Using IN4 (Contra-Logic) - Establish the focus
const focus = "Argue the opposite position to stress-test assumptions and expose weak reasoning";

Step 2: Apply the model

// Using IN4 (Contra-Logic) - Apply the transformation
const output = applyModel("IN4", focus);

Step 3: Synthesize outcomes

// Using IN4 (Contra-Logic) - Capture insights and decisions
const insights = summarize(output);

Practical Example

// Using IN4 (Contra-Logic) - Example in a risk assessment for a launch
const result = applyModel("IN4", "Argue the opposite position to stress-test assumptions and expose weak reasoning" );

Integration with Other Transformations

  • IN4 -> P1: Pair with P1 when sequencing matters.
  • IN4 -> DE3: Use DE3 to validate or stress-test.
  • IN4 -> SY8: Apply SY8 to compose the output.

Implementation Checklist

  • Identify the context that requires IN4
  • Apply the model using explicit IN4 references
  • Document assumptions and outputs
  • Confirm alignment with stakeholders or owners

Common Pitfalls

  • Treating the model as a checklist instead of a lens
  • Skipping documentation of assumptions or rationale
  • Over-applying the model without validating impact

Best Practices

  • Use explicit IN4 references in comments and docs
  • Keep the output focused and actionable
  • Combine with adjacent transformations when needed

Measurement and Success

  • Clearer decisions and fewer unresolved assumptions
  • Faster alignment across stakeholders
  • Reusable artifacts for future iterations

Installation and Usage

Nix Installation

{
  programs.moltbot.plugins = [
    { source = "github:hummbl-dev/hummbl-agent?dir=skills/IN-inversion/in4-contra-logic"; }
  ];
}

Manual Installation

moltbot-registry install hummbl-agent/in4-contra-logic

Usage with Commands

/apply-transformation IN4 "Argue the opposite position to stress-test assumptions and expose weak reasoning"

Apply IN4 to create repeatable, explicit mental model reasoning.