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slatestarcodex's profile
Scott Alexander
Scott Alexander
Scott Alexander
@slatestarcodex

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Scott Alexander

@slatestarcodex

I have a place where I say complicated things about philosophy and science. That place is my blog. This is where I make terrible puns.

slatestarcodex.com
Joined June 2013

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    1. Pierre Ouannes‏ @PierreOuannes Mar 28
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      Replying to @JFPuget @xtbot and

      Honestly I'm not sure if homemade masks is part of the answer or not. It seems to me though that it makes a whole lot of sense to protect yourself and others from droplets that can come from coughing and speaking.

      2 replies 0 retweets 1 like
    2. Pierre Ouannes‏ @PierreOuannes Mar 28
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      Replying to @PierreOuannes @JFPuget and

      You say data don't lie but the only data you've shown about Czechia is a few hundred cases over the last few days. Nobody is saying that homemade masks will completely stop the virus. It obviously won't. But if it can slow it down it's already a huge win.

      1 reply 1 retweet 3 likes
    3. JFPuget Wash Hands Distancing Mask‏ @JFPuget Mar 28
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      Replying to @PierreOuannes @xtbot and

      You didn't had these caveat when you wrote: > It was halted when he wrote his tweet. Yet that was based on even smaller data. This is not a scientific discussion, I'll stop here.

      1 reply 0 retweets 2 likes
    4. Pierre Ouannes‏ @PierreOuannes Mar 28
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      Replying to @JFPuget @xtbot and

      Yes we are operating on little data which is recent and very hard to interpret. It doesn't mean we can't have a scientific discussion about the usefulness of masks in stopping droplets potentially loaded with virus.

      3 replies 0 retweets 2 likes
    5. JFPuget Wash Hands Distancing Mask‏ @JFPuget Mar 28
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      Replying to @PierreOuannes @xtbot and

      1. Data shows the opposite of what Jeremy Howard said. 2. There is no data showing that wearing a surgical mask protects you from infection. There is data showing the opposite, see for instancehttps://slatestarcodex.com/2020/03/23/face-masks-much-more-than-you-wanted-to-know/ …

      3 replies 0 retweets 1 like
    6. Alvaro de Menard‏ @AlvaroDeMenard Mar 28
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      Replying to @JFPuget @PierreOuannes and

      I think you need to re-read that SSC piece, it offers a lot of data in support of masks.

      1 reply 0 retweets 4 likes
    7. JFPuget Wash Hands Distancing Mask‏ @JFPuget Mar 28
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      Replying to @AlvaroDeMenard @PierreOuannes and

      Like this? "According to intention-to-treat, the studies unanimously found masks to be useless."

      2 replies 0 retweets 0 likes
    8. Scott Alexander‏ @slatestarcodex Mar 28
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      Replying to @JFPuget @AlvaroDeMenard and

      I am the author of the linked article. For clarification, I intended the article to claim that there is strong circumstantial evidence (though not 100% proof) that masks are useful for protecting the wearer.

      4 replies 7 retweets 60 likes
    9. JFPuget Wash Hands Distancing Mask‏ @JFPuget Mar 28
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      Replying to @slatestarcodex @AlvaroDeMenard and

      Awesome, I can ask you. How come you dismiss "According to intention-to-treat, the studies unanimously found masks to be useless." after explaining that "intention-to-treat" is the only unbiased way to evaluate an effect? 1/2

      2 replies 0 retweets 0 likes
    10. Scott Alexander‏ @slatestarcodex Mar 31
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      Replying to @JFPuget @AlvaroDeMenard and

      First, because MacIntyre and Chugatai do that in their review, and they're the world experts. But also because there's no such thing as a perfect study - AFAIK there are no RCTs proving smoking causes cancer. You have to do the best you can interpreting imperfect evidence.

      2 replies 1 retweet 12 likes
      Scott Alexander‏ @slatestarcodex Mar 31
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      Replying to @slatestarcodex @JFPuget and

      I don't have any justification for how I went about it other than that I would feel sillier ignoring the per protocol results because of the chance of those being biased, than I would accepting the ITT results which we know are biased.

      11:57 PM - 31 Mar 2020
      • 1 Retweet
      • 4 Likes
      • Ciarán JFPuget Wash Hands Distancing Mask Daniel Houck Michael Keenan
      1 reply 1 retweet 4 likes
        1. New conversation
        2. Scott Alexander‏ @slatestarcodex Mar 31
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          Replying to @slatestarcodex @JFPuget and

          I think "ITT is gold standard" means "If you prove something with ITT, that's very strong." It doesn't mean that if you can't prove it with ITT, you have gold-standard proven it false. Since there is no gold standard evidence here, I go with the best we have, and hope.

          1 reply 1 retweet 5 likes
        3. JFPuget Wash Hands Distancing Mask‏ @JFPuget Apr 1
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          Replying to @slatestarcodex @AlvaroDeMenard and

          Here we are not assessing the effect of people wearing masks. We have to asses the effect of govt telling people to wear masks. Some people will do it right, some won't. Focusing on those who do it right is irrelevant. That's why I think ITT is the only way to go. Just sayin'

          0 replies 0 retweets 0 likes
        4. End of conversation

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