Use when stuck on a quant research direction, when seeking a fresh angle on a familiar problem, or when the team's existing vocabulary feels exhausted. Imports mechanisms from physics, biology, computer science, ecology, control theory, or economics into the current quant problem via Gentner structure-mapping — map RELATIONS not attributes, prefer higher-order systematicity. Produces 3–5 candidate base→target analogies with explicit mapping tables and one falsifiable derived prediction per analogy. Triggers; "is there an analog of X", "we need a fresh angle", "why does Y behave like that", "we've used the same metaphor too long". For testing claims you already have, use q…