Identify hidden assumptions and test how changing them affects a recommendation or design.
Install
npx skills add alivirgo/Major-AI-Skills --skill fill-in-missing-assumptionsnpx skills add alivirgo/Major-AI-Skills --skill fill-in-missing-assumptions -a claude-code -gnpx skills add alivirgo/Major-AI-Skills --skill fill-in-missing-assumptions -a codex -ggemini skills install https://github.com/alivirgo/Major-AI-Skills.git --path skills/fill-in-missing-assumptionsgh skill install alivirgo/Major-AI-Skills fill-in-missing-assumptionsgit clone --depth 1 https://github.com/alivirgo/Major-AI-Skills /tmp/alivirgo__Major-AI-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/alivirgo__Major-AI-Skills/skills/fill-in-missing-assumptions ~/.claude/skills/fill-in-missing-assumptions # Claude Code
cp -R /tmp/alivirgo__Major-AI-Skills/skills/fill-in-missing-assumptions ~/.agents/skills/fill-in-missing-assumptions # Codex, Cursor, Gemini CLI, Copilot, OpenCode