Open-source Agent Skill for Claude Code that makes Claude reason with explicit probabilities, base rates, and falsifiers. Distilled from 51 books; first in 18/18 blind passes vs baseline Claude and GPT-5.5, and benchmarked against 14 rival skills and prompt techniques with full cost telemetry (round 5).
2 files for Codex, OpenCode and Claude Code: critical-thinking AGENTS.md, critical-thinking CLAUDE.md — 1,032 tokens loaded in every session.
AGENTS.md A 731 tok CLAUDE.md A 301 tok These files are Johna2an/critical-thinking's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.