The Mudcat Café TM
Thread #167504   Message #4123453
Posted By: Steve Shaw
18-Oct-21 - 07:47 PM
Thread Name: BS: New news on the pandemic COVID-19
Subject: RE: BS: New news on the pandemic COVID-19
Any evidence comparing schools, by the way, would be observational only (in other words, not based on controlled experimental investigation). Schools are diverse places in every way, and confounding factors would abound. It's no good turning a blind eye to this: every observational study I've seen with regard to masks has been confronted by this issue, and only the best of them even bother to admit to it. Another obstacle to credibility is small sample numbers. Observational studies on human behaviour can do little more than suggest further investigation. They can rarely lead us to rock-solid conclusions informing future action. I'm not saying that observation is useless. It's a valuable scientific tool, and for millennia it was the only tool we had. The potential pitfalls are huge. Observational science told us that the sun goes round the earth.