Mental Models? Latticework? Huh? Do what now?
Munger has come to the conclusion that in order to make better decisions in business and in life, you must find and understand the core principles from all disciplines.
In short, learn all the big ideas and how they interrelate and better, more rational thinking will naturally follow.
This is what he calls Elementary Worldly Wisdom, and using his system of Mental Models can help you succeed in almost any endeavor.