What you get

The author states it himself: not one skill is proven to improve accuracy.

28 Mental Models, Zero Proven to Help

Added 2026-08-06

The entry point is a routing meta-skill, with another for combining models. The theory is credited by name to Munger, Meadows, Kahneman, Goldratt, TRIZ and OODA.

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28 Mental Models, Zero Proven to Help preview

The author leads with the negative result: no skill holds a robust, replicated verdict of improvement, and all twenty-eight are manual-only. The closest one ends at directional-but-not-replicated. Thirty-nine were cut to twenty-eight after evidence review. His own conclusion: treat them as scaffolding for structured reasoning, not a guarantee of accuracy. The evaluation apparatus is real: structural validation, routing false-trigger control, blind pairwise evals, and a provenance register that fails closed.