Inability to explain simply = incomplete processing…
When you cannot explain a concept in simple terms to someone with zero shared context, treat this as diagnostic evidence that your processing is incomplete rather than a labeling problem.
When This Fires
- When testing your own understanding of a concept you've been studying
- When Create SRS cards only for information you already…'s prerequisite check (understand before memorizing) needs a verification method
- When you feel like you "kind of understand" something but aren't sure
- When preparing to teach, write about, or apply a concept in a new context
Common Failure Mode
Confusing recognition with understanding: you can recognize correct statements about a concept (multiple-choice tests, nodding during lectures) but can't generate an explanation from scratch. Recognition requires only pattern matching; explanation requires reconstructive understanding. The Feynman test specifically targets generation, not recognition.
The Protocol
(1) Choose a concept you've been processing. (2) Attempt to explain it in 3-5 simple sentences to an imaginary audience with zero shared context. No jargon, no abbreviations, no "as you know" assumptions. (3) Where you get stuck — where you reach for jargon, wave your hands, or say "it's complicated" — mark the sticking point. That's the specific gap in your understanding. (4) Return to the source material and specifically target the gap: what mechanism, relationship, or distinction are you failing to articulate? (5) Re-attempt the explanation. Repeat until you can explain the entire concept simply and completely. The gap between your first attempt and your final attempt represents the processing work that was still needed.