For a packer, consistency and integration are not so important as finding or bending the right piece of knowledge for a given situation. Mappers tend to be better able to construct new ideas and see patterns or solutions where packers might not. Packers tend to be better at diligently pursuing systematic goals. Mappers predominantly adopt the cognitive strategy of populating and integrating mental maps, then reading off the solution to any particular problem. They quickly find methods for achieving their objectives by consulting their maps.
Packers become adept at retaining large numbers or knowledge packets.
The distinction between Mappers and Packers far predates Carter. It has been known for many years in child development circles, especially when dealing with gifted children. The two approaches to dealing with a gifted child are Acceleration and Enrichment. Acceleration is only appropriate for a fraction of gifted children but those children will be singularly unsuited for enrichment programs. In abstract models of the mind which unify abstract concepts with raw sensations, 'models' and 'experiences' respectively, there are no presuppositions about what people value.