── ── Mental model
Cross-Disciplinary Creativity
Importing an actual mechanism from a foreign domain and applying it structurally to a home-domain problem — producing a configuration no expert in either field could conceive alone. Not metaphor-making; the mechanism must be imported structurally, not just referenced.
How it works
Gate: Confirm home-domain local search is genuinely exhausted before starting.
1. State the problem precisely — home domain, specific problem, what was tried and why it failed. 2. Map home-domain tools and assumptions — these are the boundaries you will cross. 3. Restate the problem structurally — strip domain-specific language to reveal the underlying challenge. 4. List 3 unrelated domains facing the same structural problem (ecology, military strategy, thermodynamics, game design…). 5. For each: name the specific mechanism it uses — not an analogy; a concrete process/structure/technique. 6. Force the combination — apply the foreign mechanism: what translates directly, what needs adaptation?
Stop-rule: Metaphor ("like going viral") → return to step 5. Mechanism (specific replication structure with calibrated parameters) → proceed.
When to use it
- industry is producing structurally similar solutions
- a problem has resisted all home-domain attempts
- you need radical differentiation from incumbents
- a foreign technology has appeared that no one in your field has noticed
When not to use it
home domain has a known solution needing better execution; user wants to brainstorm more options within their existing field.
Worked example
Gutenberg's Printing Press (c. 1440)
Johannes Gutenberg did not invent any of the elements of the printing press. He was a goldsmith by trade — an expert in metallurgy and fine metalwork, with no background in manuscript production or publishing. What he created was a cross-disciplinary combination that no single-domain expert could have conceived:
Install this skill (free, MIT)
npx skills add deciqAI/knowledge-skills