Skip to content
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
Verified account
@zeynep

Tweets

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

Tweets

  • © 2022 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @jljcolorado @kprather88 and

      Nothing in that thread explains why you'd expect outdoor transmission to drop by only 2x if the mechanism is droplet transmission.

      1 reply 0 retweets 1 like
    2. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @Merz @jljcolorado and

      Among other things, people tend to be further apart outdoors, and they tend to be outdoors when it's sunny. Pyrimidine dimers are a thing.

      5 replies 0 retweets 2 likes
    3. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @Merz @kprather88 and

      I have not found data to substantiate that the conversational distance is higher outdoors than outdoors. And UV radiation inactivates the virus, but in 5-30 min, too slow too matter.

      6 replies 3 retweets 97 likes
    4. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @jljcolorado @kprather88 and

      Halftimes far shorter than 5-30 minutes have been reported.

      3 replies 0 retweets 2 likes
    5. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @Merz @jljcolorado and

      "I have not found data to substantiate that the conversational distance is higher outdoors than outdoors." And that's just silly.

      4 replies 0 retweets 3 likes
    6. Alex Merz‏ @Merz 20 Dec 2021
      Replying to @Merz @jljcolorado and

      What this tells me is that rather than talking forthrightly about uncertainties in your interpretation, you are more than willing to simply assert that they are not uncertainties.

      2 replies 0 retweets 1 like
    7. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
      Replying to @Merz @kprather88 and

      I have talked a lot about uncertainties. Have looked for such data for a long time, and I have observed the distance myself, and not seen a clear difference. But let's say that there is 10-20% more distance. Would that cut transmission x20? That's not plausible.

      2 replies 0 retweets 46 likes
    8. zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @jljcolorado @Merz and

      Off the top of my head, why would ventilation matter indoors if it were mainly droplets, as ballistic particles, same behaviour. Why would plexiglass—which would block droplets—be associated with *higher* rates of infection, as predicted from aerosols, via ventilation dead zones.

      2 replies 8 retweets 72 likes
    9. zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @zeynep @jljcolorado and

      Why would HEPA filters work? They aren't between you and the person you are speaking with, should be irrelevant for droplets. How could there be so much overdispersion with a mainly droplet, thus, ballistic trajectory, particles?

      3 replies 5 retweets 51 likes
    10. zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @zeynep @jljcolorado and

      Once you posit that aerosols are the main route of transmission, every known significant fact from the epidemiology fits easily within a framework compatible with basic physics. When you posit droplets as main route of transmission, the empirical facts don't make sense.

      3 replies 10 retweets 48 likes
      zeynep tufekci‏Verified account @zeynep 20 Dec 2021
      Replying to @zeynep @jljcolorado and

      (I don't know how I got summoned to this thread but I would love to see a framework that explains how droplets could explain the empirical facts we observe. I'd be genuinely interested to see one; have been asking forever. There's one for aerosols, and it fits data and physics.)

      2:45 PM - 20 Dec 2021
      • 6 Retweets
      • 48 Likes
      • Aneer J Shepherd Laura McCall #NoMassInfection Jakob Juhola Dr. Ellen L. Simms, she/her HarleyMonsterCat🦇🐘 🐾 vaccineaccount37 themjdworldwide Matthew Schneck
      3 replies 6 retweets 48 likes
        1. New conversation
        2. DR_O_oDR                              ¯\_(ツ)_/¯‏ @DRO_oDR 20 Dec 2021
          Replying to @zeynep @jljcolorado and

          We could start with how medical science somehow distinguishes between droplets and aerosols by a size that is not covered by physical measurements and unknown in physics/engineering. "Continuum" they say, but "5µm!" .

          1 reply 0 retweets 5 likes
        3. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 20 Dec 2021
          Replying to @DRO_oDR @zeynep and

          Indeed, an error dating from the 1960s that they refuse to acknowledge:https://royalsocietypublishing.org/doi/full/10.1098/rsfs.2021.0049?af=R …

          1 reply 2 retweets 11 likes
        4. Show replies
        1. New conversation
        2. Alex Merz‏ @Merz 20 Dec 2021
          Replying to @zeynep @jljcolorado and

          Haven't a clue. Wasn't me.

          1 reply 0 retweets 1 like
        3. Jeremy Kamil‏ @macroliter 20 Dec 2021
          Replying to @Merz @zeynep and

          Me neither. (The funniest part of this “debate” / thread is that there’s not even much disagreement among the parties.)

          0 replies 0 retweets 2 likes
        4. End of conversation
      1. Show additional replies, including those that may contain offensive content

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2022 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info