Essential point in a critical thinking lesson quoted from the source below:
"Importantly, expert testimony is never to be believed. That is, since The Enlightenment, authorities are never to be believed on their word but to be used as possible guides to point to objective data.
"I will always encourage you to never believe anything I say regarding economics, government, and history. If I’m successful in my teaching you critical thinking skills, you’ll be able to ascertain credibility for factual claims on your own. Indeed, anyone of ethics will never ask for “belief,” but transparently provide evidence for others’ thoughtful consideration....
"Expert testimony is only any good to the extent it does two things for the reader/audience:
Help understand available facts rather than confuse or obfuscate.
Transparently present facts that are objectively true. That is, the testimony shines light upon data that thereafter anyone can confirm or refute. This removes any need for belief, as the facts will speak for themselves.
Successful expert testimony therefore allows an audience that had been confused by an issue at first to understand it in concept and factual detail. The audience would thereafter be able to look at the data and understand the issue for themselves.