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wwwojtekk's profile
Wojtek Kopczuk
Wojtek Kopczuk
Wojtek Kopczuk
@wwwojtekk

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Wojtek Kopczuk

@wwwojtekk

Economist, tax policy/inequality. Editor of @JPubEcon. President @iipf_org. Professional skeptic. Anti-illiberal. If vowels are missing, the tweet is in Polish.

New York City
columbia.edu/~wk2110
Joined February 2010

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    Wojtek Kopczuk‏ @wwwojtekk 13 Nov 2021

    Wojtek Kopczuk Retweeted zeynep tufekci

    I mean... The frustration since the beginning of pandemic were public health/epi people arguing for Peltzman effects (masks and less than 100% tests are false security!) and #EconTwitter pushing back. I'd venture to say that on average we like behavioral nudges less than themhttps://twitter.com/zeynep/status/1459253565533437955 …

    Wojtek Kopczuk added,

    zeynep tufekciVerified account @zeynep
    Apparently, Germany stopped offering free rapid or PCR tests on the theory this would encourage remaining unvaccinated to get vaccinated. How many countries are designing public health policies by assigning it as homework to econ undergrads? Umpteenth example of this logic. pic.twitter.com/bE2TZbV7DG
    Show this thread
    12:13 PM - 13 Nov 2021
    • 16 Retweets
    • 154 Likes
    • Kimmo Valtonen Hanna M Ollila JW "Good news is good, bad news is bad" Oliver Paul Terna Gbahabo Per Holmberg Johan d'Aguas Finn Kuhn 🇪🇺 Biswajit Rath Calixto Lopez
    12 replies 16 retweets 154 likes
      1. New conversation
      2. Wojtek Kopczuk‏ @wwwojtekk 13 Nov 2021

        Wojtek Kopczuk Retweeted Wojtek Kopczuk

        https://twitter.com/wwwojtekk/status/1277367225415012353?t=Ib7CT03Yyl5DS3ncdBvPvA&s=19 …

        Wojtek Kopczuk added,

        Wojtek Kopczuk @wwwojtekk
        Replying to @arpitrage
        Epidemiologists seem to be much more focused on Peltzman effect than we are, just its presence is enough to doubt the measure because it's not "perfect". It seems to keep coming up over and over again
        1 reply 1 retweet 14 likes
        Show this thread
      3. Wojtek Kopczuk‏ @wwwojtekk 13 Nov 2021

        Wojtek Kopczuk Retweeted Wojtek Kopczuk

        https://twitter.com/wwwojtekk/status/1326606341767647233?t=Ib7CT03Yyl5DS3ncdBvPvA&s=19 …

        Wojtek Kopczuk added,

        Wojtek Kopczuk @wwwojtekk
        Replying to @Noahpinion @NotALegume
        I knew that masks worked as soon as I heard one too many times that the Peltzman effect is supposed to undo them
        1 reply 1 retweet 14 likes
        Show this thread
      4. Wojtek Kopczuk‏ @wwwojtekk 13 Nov 2021

        Wojtek Kopczuk Retweeted Wojtek Kopczuk

        https://twitter.com/wwwojtekk/status/1378343906128097281?t=Ib7CT03Yyl5DS3ncdBvPvA&s=19 …

        Wojtek Kopczuk added,

        Wojtek Kopczuk @wwwojtekk
        I get PTSD re-reading these arguments from a year ago (the glorification of Peltzman effect that never made sense to me) https://twitter.com/EpiEllie/status/1243938937690820608 …
        Show this thread
        0 replies 1 retweet 9 likes
        Show this thread
      5. End of conversation
      1. New conversation
      2. Scott Imberman‏ @imbernomics 13 Nov 2021
        Replying to @wwwojtekk

        Maybe we spent too much time teaching people about unintended consequences and we need to point out that most of the time the consequences are intended.

        2 replies 1 retweet 29 likes
      3. Wojtek Kopczuk‏ @wwwojtekk 13 Nov 2021
        Replying to @imbernomics

        Unintended consequences can be very important, but you need to have some common sense of when they can possibly be strong enough to overtake the big first order effects and backfire. It cannot be the default.

        4 replies 3 retweets 34 likes
      4. Show replies
      1. Michael Lopesciolo‏ @mlopesciolo 13 Nov 2021
        Replying to @wwwojtekk

        At its core, econ theory putting a lot of faith to individual optimization to accurate information vs. public health viewing individuals as a potential Problem is a pretty big gap

        0 replies 1 retweet 3 likes
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      1. Clemens Wagner‏ @clemenswagn 13 Nov 2021
        Replying to @wwwojtekk

        Don't think this has a behavioral motivation, though. A lot of restrictions for going anywhere require you to either be vaccinated OR provide a recent test result. If you have to pay for the test out of your own pocket it's cheaper to just get the vaccine.

        0 replies 1 retweet 2 likes
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      1. New conversation
      2. Alex Godofsky‏ @AlexGodofsky 13 Nov 2021
        Replying to @wwwojtekk

        Circa feb/march 2020 my belief was that "wear masks" was the clearly correct decision but there was a non-trivial chance that they were actually net negative. The particular problem is that we didn't really know how effective they actually were.

        2 replies 0 retweets 3 likes
      3. Alex Godofsky‏ @AlexGodofsky 13 Nov 2021
        Replying to @AlexGodofsky @wwwojtekk

        The Peltzmann effect can be a different animal if people can *incorrectly* compensate for a *perceived* but not real risk reduction.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. twink emeritus 🦉‏ @himbonomics 13 Nov 2021
        Replying to @wwwojtekk

        i found it bizarre that there was Peltzman Effect speculation about masks in the U.S. when there's years of mask use data in East Asia – data that were then dismissed due to "cultural differences". I've seen anti-maskers weaponize Peltzman too

        3 replies 0 retweets 8 likes
      3.  🐱 Kissy Catboy Archangel Ren  👼‏ @RenTheAngelic 13 Nov 2021
        Replying to @himbonomics @wwwojtekk

        There IS a cultural difference: it's taboo to be openly stupid about community health problems.

        1 reply 0 retweets 1 like
      4. Show replies

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