[knzhou]

Come on, this is a trivially refutable opinion. If masks don't work, then why do healthcare workers need them?

[achenatx]

I believe it is an epidemiological/statistical reason.

Health care workers have a 100% chance of coming into contact. We cannot afford for them to be sick.

The vast majority of people wont be wearing masks so a few people wearing masks wont stop the spread so it is pointless. Even if you do wear a mask your chance of coming into contact with virus is low so you are wasting a mask for little to no statistical gain.

The n95 masks are very effective.

[knzhou]

There's a difference between "X doesn't work" and "given the current circumstances it would be useful if many people believed that X doesn't work".

[sgift]

There's also a big difference between "x works very bad for the untrained population, but let's pretend it doesn't, because my worldview demands some media conspiracy" and "x works well".

[knzhou]

East Asian countries have almost everybody wearing masks. I really don't think using these things is as complicated as you're making it out to be.

[senordevnyc]

Seriously, how much mask training do you think healthcare professionals get? Nothing that a 2 minute YouTube video wouldn’t cover, I’d guess.

[baddox]

Presumably there are lots of medical devices that are very useful to trained healthcare workers that are not useful for other people.