A shallow person can't distinguish between someone with a shallow understanding and a deep person who uses it shallowly.
A person with a shallow understanding of a concept is using a concept in a shallow way, while a person with a deep understanding of a concept is using a concept in a shallow way, and a person with a shallow understanding of a concept cannot distinguish between the two.
The idea of "cultural sphere" came to me when I linked "culture" and "sphere" in "cultural sphere" respectively and saw that the latter was connected to the meaning of "sphere" in the sphere theory.
I ain't in the ballpark.
---
This page is auto-translated from /nishio/理解が浅い人と浅く使ってる深い人は浅い人には区別できない using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I'm very happy to spread my thought to non-Japanese readers.