Surface and challenge the hidden assumptions in any problem, plan, or framing. Use when the user feels stuck despite trying multiple approaches, a problem seems intractable, a plan keeps failing for unclear reasons, something 'obvious' keeps producing unexpected results, or before using any other creative thinking tool when the problem itself might be wrongly framed.
Install
npx skills add human-avatar/skills-for-humanity --skill s4h-creativity-assumption-excavatornpx skills add human-avatar/skills-for-humanity --skill s4h-creativity-assumption-excavator -a claude-code -gnpx skills add human-avatar/skills-for-humanity --skill s4h-creativity-assumption-excavator -a codex -ggemini skills install https://github.com/human-avatar/skills-for-humanity.git --path skills/s4h-creativity-assumption-excavatorgh skill install human-avatar/skills-for-humanity s4h-creativity-assumption-excavatorgit clone --depth 1 https://github.com/human-avatar/skills-for-humanity /tmp/human-avatar__skills-for-humanity
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/human-avatar__skills-for-humanity/skills/s4h-creativity-assumption-excavator ~/.claude/skills/s4h-creativity-assumption-excavator # Claude Code
cp -R /tmp/human-avatar__skills-for-humanity/skills/s4h-creativity-assumption-excavator ~/.agents/skills/s4h-creativity-assumption-excavator # Codex, Cursor, Gemini CLI, Copilot, OpenCode