I hate that. I have finally finished a complicated story and have become so steeped in the language of a particular subfield that I want to use its jargon. Frequently the jargon term is really complicated to explain and I am reluctant to interrupt the flow of my story to define it. On the other hand, if I stick it in unexplained, the term might just stop my reader in his or her tracks. So I am challenged to find a simpler way to say the same thing, or else completely drop the particular detail that required the jargon word, often with no loss to the overall story.
Good writing is clear thinking.
That doesn't mean I have to take a course in every topic I write about, but at least I have to understand the main characteristics of the phenomenon. An even better test of how well you understand a subject is how well you can explain it to a colleague in conversation. Sometimes in staff meetings, we newsreporters summarize for one another the stories we are working on. By having to field questions from the other writers, each of us has to hone our own understanding. None of these rules is new.