3 ms·
It's an intentional feature of the product, though? It sounds like they're specifically designed not to obstruct exhalation. Why would you be skeptical of that?
by _bxg1 7y ago
It's an intentional feature of the product, though? It sounds like they're specifically designed not to obstruct exhalation. Why would you be skeptical of that?
- projektfu 7y agoBecause that fact doesn’t mean it doesn’t protect against spreading.
- _bxg1 7y ago"The fact that this hammer is heavy and shaped for hammering things doesn't mean it will drive nails. Data or GTFO."
- projektfu 6y agoAlmost everything in medicine ends up being surprising. So much "knowledge" is just someone's assumption being passed as gospel only to be discovered false years later. Medicine isn't an engineering problem. There is an analogy in software engineering where people argue about the most "efficient" way to do something and don't bother profiling it with real world data. There are consequences to advising people that their masks are half worthless, if it is not true. People might not be willing to wear valveless N95 masks. Or they take those masks off more and expose themselves more. Asking for a little data behind a recommendation is more than reasonable.