Blurb:

Teachers keep teaching and worrying about rules that have no psychological validity. Language learners keep practicing rules that have no psychological validity. Methods are twisted to fit the teaching of rules and patterns. Teachers have nothing to replace their notions of rules and patterns as they assume that any new approach for teaching language is simply a different way to teach the same thing.
Mental representation does not consist of rules. What every speaker/knower of language creates in the mind/brain, is a complex, abstract and implicit representation of language. What we observe as “language” is the result of a complex interaction of principles, constraints, and interfaces that yield utterances.