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zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
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@zeynep

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zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

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    1. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @PrasadKasibhat1 @kprather88 and

      If you can tell me what the geometries, frequencies, and durations of interaction are… I'll still think that this is the single weakest argument for aerosol transmission. I do think there are strong arguments, though.

      2 replies 0 retweets 0 likes
    2. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @Merz @PrasadKasibhat1 and

      PS, you're asking me to do something outside my expertise. I was asking Dr. Prather do do something very basic, within her area of expertise.

      1 reply 0 retweets 0 likes
    3. Prasad Kasibhatla‏ @PrasadKasibhat1 21 Dec 2021
      Replying to @Merz @kprather88 and

      I thought you were an expert in interpersonal distances based on some of your indoor vs outdoor comments to @jljcolorado! And if you are not an expert in aerosol/droplet physics, makes me wonder about basis of your arguments on this thread.

      1 reply 0 retweets 15 likes
    4. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @PrasadKasibhat1 @kprather88 and

      Again, why not go with Dr. Jimenez's argument-by-anecdote? He was making quantitiative claims based on his personal impressions of what people do outside.

      1 reply 0 retweets 0 likes
    5. Prasad Kasibhatla‏ @PrasadKasibhat1 21 Dec 2021
      Replying to @Merz @kprather88 and

      @jljcolorado actually addressed that..pic.twitter.com/PzLMSUOhbY

      1 reply 0 retweets 10 likes
    6. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @PrasadKasibhat1 @kprather88 and

      "10-20% more" is meaningless. Frequency, duration, geometry, admixture.

      2 replies 0 retweets 0 likes
    7. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @Merz @PrasadKasibhat1 and

      It's a quantitative claim. 2x vs. 20x. If it's not totally made up, he did not provide any pointers to where the model is.

      1 reply 0 retweets 0 likes
    8. Alex Merz‏ @Merz 21 Dec 2021
      Replying to @Merz @PrasadKasibhat1 and

      Perhaps you know, and can provide a link.

      1 reply 0 retweets 0 likes
    9. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 21 Dec 2021
      Replying to @Merz @PrasadKasibhat1 and

      Prof. Jose-Luis Jimenez Retweeted Prof. Jose-Luis Jimenez

      I made quantitative arguments, but you chose to ignore them. E.g. here, droplets reach 1m talking, 2 under heavier breathing. US conversational distance is 0.5-1m. It's all in the thread I sent you, and you ignored.https://twitter.com/jljcolorado/status/1292893416469090304 …

      Prof. Jose-Luis Jimenez added,

      Prof. Jose-Luis JimenezVerified account @jljcolorado
      48/ PS: forgot to include, figure from a more detailed study (https://aip.scitation.org/doi/10.1063/5.0021427 …) reaching conclusions similar to Tweets 37-38. Droplets need to be >300 um to reach across 1 m efficiently. Consistent with https://www.sciencedirect.com/science/article/abs/pii/S0360132320302183 … pic.twitter.com/4j0qUbypJr
      Show this thread
      3 replies 2 retweets 31 likes
    10. zeynep tufekci‏Verified account @zeynep 21 Dec 2021
      Replying to @jljcolorado @Merz and

      zeynep tufekci Retweeted zeynep tufekci

      Also hello, since I’m still tagged. There’s tons of research on this. It’s a rich area, decades of work.https://twitter.com/zeynep/status/1473089532920844289 …

      zeynep tufekci added,

      zeynep tufekciVerified account @zeynep
      Replying to @gardengirl778 @Merz and 8 others
      Not just that, because this has indeed been studied very well, interpersonal closeness produces *less* discomfort outdoors so people can get closer, and decades of research and measurement find that there is no indoor close/outdoor apart rule.
      1 reply 2 retweets 8 likes
      zeynep tufekci‏Verified account @zeynep 21 Dec 2021
      Replying to @zeynep @jljcolorado and

      Also outdoor still without superspreading despite many crowded evening events. Sunlight theory doesn’t fit. Also ventilation matters indoors—shouldn’t if mainly droplets. And plexiglass is associated with worse outcomes. Makes no sense for droplets but was predicted for aerosols.

      5:35 PM - 21 Dec 2021
      • 2 Retweets
      • 25 Likes
      • Lip Reader Don Oltmann Lazarus Long David Benson Hannah Davis (ON HIATUS FOR JANUARY) Ian Robertson wants πολυκατοικία everywhere Karuna Satov tarada por vacina 😏 David
      3 replies 2 retweets 25 likes
        1. New conversation
        2. Alex Merz‏ @Merz 21 Dec 2021
          Replying to @zeynep @jljcolorado and

          So point me to the source of the 2x figure that Dr. Jimenez points to comes from.pic.twitter.com/75yWR0jVwp

          1 reply 0 retweets 0 likes
        3. Prasad Kasibhatla‏ @PrasadKasibhat1 21 Dec 2021
          Replying to @Merz @zeynep and

          I assume you will point us to this data then?pic.twitter.com/zHYrnWB9kw

          0 replies 0 retweets 1 like
        4. End of conversation
        1. zeynep tufekci‏Verified account @zeynep 21 Dec 2021
          Replying to @zeynep @jljcolorado and

          Anyway people have looked at all this, with many publications, addressing most of this already! I believe this new understanding will likely be applied to all respiratory diseases after the pandemic—examine them with this perspective. A good outcome for the future! Cheers!

          0 replies 5 retweets 20 likes
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        1. Alex Merz‏ @Merz 21 Dec 2021
          Replying to @zeynep @jljcolorado and

          Do you think evidence for plexiglass being associated with worse outcomes is stronger than the evidence for handwashing being associated with better outcomes? My guess is that both are confounded.

          0 replies 0 retweets 0 likes
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