The American Jurors have convicted people based on a man's interpretation of a dog signalling that a dead body was on someone's property 5 years ago. Once people are that gulliable, they are beyond help.

https://www.science.org/content/article/should-dog-s-sniff-b...

"A jury of your peers consists of 12 people who were not smart enough to get out of jury duty."

Keep in mind that they're in an artificial environment designed to lead them to that decision. One of the judge's jobs is to ensure experts are appropriately qualified. Another of the judge's jobs is to restrict what the jury is allowed to hear.