there are a lot of biases associated with judging other people's intentions and character. Plus if it's an issue you feel strongly about, you'll be inclined to attribute negative character to whoever holds an opposing view. — Echarmion
It makes sense because most masks were not manufactured for the purpose of blocking viruses or very small droplets of virus-carrying moisture. They were designed to reduce inhalation of hazardous dusts and pollution (smoke, for instance). — Bitter Crank
There has been largely consistent randomized controlled trial (RCT) evidence in health care workers that wearing surgical masks and N95 respirators can reduce the risks of respiratory illnesses [including severe acute respiratory syndrome (SARS)] by 40–60%, after accounting for key confounders such as other protective equipment or hygiene measures.8,11 However, uncertainty remains as to whether surgical masks are inferior to N95 respirators in preventing infection. A recent meta-analysis shows that, compared with surgical mask use, use of N95 respirators is associated with a >50% reduced risk of overall clinical respiratory illness but has no apparent superiority in preventing viral infection,11 which is supported by a more recent large-scale RCT in an outpatient setting.8 Despite the potential superiority of N95 respirators over surgical masks, the evidence in health care workers defies a common claim that surgical masks are ineffective for prevention because some coronaviruses (e.g. SARS-CoV-2) may be airborne in specific scenarios (e.g. during aerosol generating procedures) and/or can infect people through the mucous membranes of the eyes.
Trial evidence in the general population is, however, more limited, because it is practically challenging to carry out and there is high risk of non-compliance and cross-contamination.15–17 Nonetheless, several case-control studies conducted in the general population in Hong Kong and Beijing during the 2003 SARS-CoV-1 outbreak found that frequent use of facemasks (predominantly surgical masks in both studies) in public spaces was associated with a >60% lower odds of contracting SARS compared with infrequent use, after accounting for key confounders.18,19 Although the effectiveness could be overestimated in observational studies (as seen in studies among health care workers11) the lack of conclusive evidence does not substantiate claims that surgical masks are ineffective for the public, but calls for further research, particularly on the reason behind the failure of transferring the effectiveness observed in health care workers to the general population, and the strategies needed to boost the effectiveness. — COVID-19 epidemic: disentangling the re-emerging controversy about medical facemasks from an epidemiological perspective (Int J Epidemiol. 2020)
Oh so that's what surgical masks are for? To make those notoriously smoke-filled, asbestos-lined hospitals more safe for medical personnel? Who would've thunk. — SophistiCat
Standards pulled from one's ass can be satisfied in the same manner. Is your argument that nobody has ever signaled virtue for the positive social sanctions that might be bestowed as a result? — VagabondSpectre
I think that he is saying while we should certainly be wearing masks inside, the way we process the sight of others with or without masks (especially inside) is now a kind of moral signal in and of itself...
As if merely wearing a mask gives you some kind of moral coupon that can be exchanged at a later time for adulation and anger from or at others... Right of rebuke... — VagabondSpectre
However, the mask "signals virtue"; it says "this person is responsible, and cares about the health of others. — Bitter Crank
We all do this consciously or unconsciously not because we are in essence good people, but because we all want to be "seen" by others as good people. — Gus Lamarch
Is it therefore more important to be seen as good, than to actually be good? — Marchesk
It's interesting how our stated moral systems say the opposite. — Marchesk
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