to construct a new latticework of mental models, we must first learn to think in multidisciplinary terms and to collect (or teach ourselves) fundamental ideas from several disciplines, and then we must be able to use metaphors to link what we have learned back to the investing world. Metaphor is the device for moving from areas we know and understand to new areas we don’t know much about. To build good mental models, we need a general awareness of the fundamentals of various disciplines, plus the ability to think metaphorically.