How Do You Know What You Know?

Larken Rose: How do you know what you know? That question is a lot more important than most people assume, and the recent ridiculous spectacle surrounding Covid-19 is a shining example of that.
(CORRECTION: In the video, I said that 0.26% is about one in 4,000 people, when it would be one in 400. Otherwise the point remains the same--since if you pick 400 people at random, at least one will be very old or have a very weak immune system--but I wanted to correct that.)