the-fool

Use the pre-mortem mode, which imagines the plan has already failed and generates specific failure narratives ranked by likelihood and impact. Each narrative includes consequence chains, early warning signs, and concrete mitigations.

Pre-mortem analysis finds internal failure modes by imagining the plan already failed, while red teaming adopts an external adversary's perspective to find exploitable weaknesses. Pre-mortem suits reliability concerns; red teaming suits security and competitive threats.

Use the evidence audit mode, which extracts claims, designs falsification criteria for each, grades evidence quality from A to F, checks for cognitive biases, and surfaces competing explanations for the same data.

It handles both. The mode selection guide maps decision types like vendor selection, business strategy, hiring, and architecture to appropriate reasoning modes, with domain-specific question banks for technical, business, and strategic decisions.

Avoid it when the question is narrow and already resolved, or when the user needs execution rather than evaluation. The skill also prohibits nihilistic criticism and always requires synthesis, so it is unsuitable if you only want validation.