Part three:
"How do you know someone is fluent?" When they demonstrate certain behaviours? Emit certain phrases and buss words? Complete their SAFMEDS in record time? What about the outcomes we're usually interested in: understanding what people are doing and why they are doing it, and describing it in such a way that ties it to behavioural principals. Meaning, breaking down the information we're given into relevant behaviour elements (Humility Note: don't break it down and feed it back to them. Please do it in your own head unless they ask you). Once you have your internal translation, use plain language to gauge your own and your listener's understanding, instead of relying on jargon.