[jwandborg]

Experts deeply understand their subject.

- Experts that tailor their answers to meet the audience are experts, but not only experts, they also have the luck of finding good analogues for parts of a system or topic, and a skill, or luck, of story telling and structuring teaching.

- Individuals who use analogues and simplifications to describe a system or topic are not necessarily experts, they can also be lucky or skilled imitators, or just teachers.

- Experts who are experts by the definition of having a deep understanding of the subject, but who are incapable or unwilling to simplify and/or structure the story well (in your subjective opinion), are still experts, but unless you also become an expert on the topic, it will be hard for you, or anyone else, to trust their expertise.