Experts connotes superiority and credibility. When the source of information comes from expert, we are very inclined to believe them, even more so when the expert’s last name is followed by a long list of credentials
And we would be foolish to question the experts. They’ve gone through so much trouble to produce the facts that you are reading now- extensive research, long period of observation and funded heavily by well-established corporations
Only problem is we don’t often get to evaluate or read about these experiments, or at least it’s not explained in a way that it’s easy for the average Joe to understand.
When in doubt, we always take the expert’s word for it. Even Mum could sometimes be wrong.