Now I'm old, I'm 30, and I started to realise that all those people who say they know, they actually don't know. Many of them don't know, and especially those who say that they know, don't know, because those who do know say that they don't know.The Slate Article says this is a good principle for who to believe about COVID-y things.
Admitting to uncertainty and acknowledging things are just your best estimation are crucial. "Certain Faiths" are not trustworthy. (And the 4.7 star place or product is probably better than place with nothing but 5 star reviews.)