Why do science communication experts recommend that speakers minimize use of jargon, the specialized vocabulary of a field, when talking to public audiences?

Jargon may be so concise that speakers could be left with extra time.

Jargon can make it harder for some in the audience to understand what is being said.

Jargon generally is more acceptable in written material, than in speech.

Jargon may be harder for the speaker to pronounce.