Earlier this month the Cochrane Collaborative was forced to walk back the conclusions of a review by Tom Jefferson et al that had been spun in the media as proving that “masks don’t work.” Tom Jefferson himself has been problematic about vaccines for a long time, but the rot goes deeper. What is it about the evidence-based medicine paradigm that results in misleading conclusions?
![Masks](https://i0.wp.com/www.respectfulinsolence.com/wp-content/uploads/2020/10/Maskslined.png?fit=865%2C485&ssl=1)