Problem: Communication is difficult because your audience doesn't have the language or concepts to understand what is to be communicated. Context: Teaching/Learning programming; Teaching/Learning philosophy; "Teaching" (a computer) programming languages; ...? Forces: "Teacher" and "learner" speak languages that are very different; the teacher's language is at a much higher level, that is, much more "meta", to be buzzword-compliant; the language of the learner may contain elements that, when seen from the teacher's perspective, are obsolete or even wrong. Solution: The teacher uses a language of level (n-1) in order to teach language (n), even though this language is "wrong" from his standpoint. Rationale: Patterns amuse me (okay, maybe this is a meta-rationale) :-)