The science, or lack thereof, behind masking. From Gregory Morin at theburningplatform.com:
“We know that wearing a mask outside health care facilities offers little, if any, protection from infection. Public health authorities define a significant exposure to Covid-19 as face-to-face contact within 6 feet with a patient with symptomatic Covid-19 that is sustained for at least a few minutes (and some say more than 10 minutes or even 30 minutes). The chance of catching Covid-19 from a passing interaction in a public space is therefore minimal. In many cases, the desire for widespread masking is a reflexive reaction to anxiety over the pandemic.”
These days everyone imagines himself or herself to be a scientist. Scolds, who labor under the delusion that reading the New York Times is equivalent to holding a doctorate, unceasingly inflict on us finger-wagging lectures about how we need to “listen to the science” when it comes to masks. Apparently “masks work” because “The Science™” says so. Newsflash: these media figures and self-styled authorities aren’t (largely) scientists and know not of what they speak. As a scientist myself I feel compelled to set the record straight on what is, and is not, science. For those degreed scientists out there parroting the mask propaganda: for shame, you should know better. Cherry picking, selection bias, anecdotal data, and dubious models have no place in the arsenal of scientific inquiry.
What is the claim built on?
Here’s the problem with “the science” about masks: the media cited studies are built on a foundation of sand. They are based on computer models1, anecdotal stories2, theoretical mechanistic (non-biological) analysis, or hypothetical contra factual scenarios.1 In short, if the conclusion of a study rests on “this would have happened” then that is not science. Science does not compare contra factual or hypothetical scenarios. It analyzes concrete, reproducible, controlled conditions (that are broad enough to be statistically valid). In every single story where there has been a reference made to evidence that “masks work” and I have drilled down through the 42 layers of links to get at the actual research document, it turns out the study is, surprise, based on a contra factual model, anecdote, or purely mechanistic study. Every. Single. Time. How do models support the claims?