A professional whose job it is to explain to others what it personally does not understand.

Summary

This quote suggests that there are professionals who are responsible for explaining complex concepts or tasks to others, even if they themselves do not fully comprehend them. It implies that having expertise in explaining something does not necessarily require complete comprehension of the subject matter. This could apply to various professions, such as teachers, technical support staff, or consultants, highlighting the importance of effective communication and the ability to break down complex ideas for others to understand, regardless of personal understanding.