Use the Feynman Technique to Test Whether You Really Understand Something

The Feynman Technique works on a simple premise: if you can explain it to someone who does not know it, you understand it; if you cannot, the gap is in your knowledge rather than in their background. This applies the technique to a specific concept, identifies the gaps in your explanation, pushes for a cleaner second attempt, and gives a verdict on whether you need more time with the source material.

I think I understand {CONCEPT} but I am not sure the understanding is deep. Walk me through the Feynman Technique applied to this specific concept. Start by having me explain it as if I were teaching it to a 16-year-old with no background in this subject. Then identify the gaps and unclear points in my explanation. Then have me try again for the gaps specifically. End with a verdict: can I explain this clearly enough to actually use it, or do I need to go back to the source material?