Does everyone suppose that to be an "expert" on a given subject, one needs necessarily have a degree, specifically, in that subject.
Conversely, does having a degree in a given subject render the holder of said degree an "expert".

The argument of wether or not Dr. Kay is qualified to to properly informed in the field of physics is best known to Dr Kay and his associates. A botanist may be knowledgeable in the field of geology. An economist may be knowledgeable in the field of plumbing, just as a plumber may by markedly learned in economics. An historian may know genetics. A hobo might be the world's foremost foreign relations expert, if but one were to ask him. (The Defense Secretary, in fact, seems to understand less of that field than your average hobo).

I don't support the current administration, it's wars, or it's (lack of) economic policies.
But neither do I support the elitism of academia or the Cult of Expertise.