When I tried to teach the conundrums of black holes I discovered my own gaps in understanding by trying to teach an 8 year old.

The Feynman technique does include having to know fundamentals first so there can be a common language/concepts to discuss something.

Step 1, learn everything possible first.
Step 2, study the impossible that may be possible based on what you know.
But I get your point Dave. Teach and you will be taught. ?