Many people are just interested in expert credentialism and expert theatrical performance for an audience though.
If you really want to know a subject well beyond theater, you obviously would have to know many adjacent subjects and many seemingly unrelated subjects since "subjects" in this context are just imaginary divisions within human knowledge.
If your interest is credentialism though then the unrelated subjects are just a complete waste of time and most likely the adjacent subjects are just a distraction from memorizing your lines for the theatrical "subject matter expert" performance.
It is really a question of the best way to pretend to be a great mind when you are average and that is to specialize to a degree that minimizes the amount of people who know what you are talking about on the subject of interest.
We have built an entire class of society on this method.
If you really want to know a subject well beyond theater, you obviously would have to know many adjacent subjects and many seemingly unrelated subjects since "subjects" in this context are just imaginary divisions within human knowledge.
If your interest is credentialism though then the unrelated subjects are just a complete waste of time and most likely the adjacent subjects are just a distraction from memorizing your lines for the theatrical "subject matter expert" performance.
It is really a question of the best way to pretend to be a great mind when you are average and that is to specialize to a degree that minimizes the amount of people who know what you are talking about on the subject of interest.
We have built an entire class of society on this method.