The Great Mental Models, Volume 4By: Shane Parrish, Rhiannon Beaubien Series: The Great Mental Models Series From the New York Times bestselling author of Clear Thinking and Farnam Street founder, Shane Parrish. The fourth and final installment in the timeless Great Mental Models series. Time and time again, great thinkers such as Charlie Munger and Warren Buffett have credited their success to mental modelsrepresentations of how something works that can scale onto other fields.