"The SARS-CoV-2 pandemic made it clear that disagreements among experts may extend even to such seemingly simple decisions as wearing a face mask. **By the end of March 2020 (three months into the pandemic) the World Health Organization still advised against doing so unless a person was infected, and the reversal came only in early June 2020.**" ([Location 265](https://readwise.io/to_kindle?action=open&asin=B08SGC3TD3&location=265)) --- **Tags** -- [[quotes]], [[pandemic]], [[epistomelogical-challenge]], [[scientific-method]], [[epidemoiology]], **Source** -- [[202412030828 - B - How the World Really Works]]