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sapinker's profile
Steven Pinker
Steven Pinker
Steven Pinker
Verified account
@sapinker

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Steven PinkerVerified account

@sapinker

Cognitive scientist at Harvard.

Boston, MA
pinker.wjh.harvard.edu
Joined January 2010

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    Steven Pinker‏Verified account @sapinker Feb 8

    40 years ago William Nordhaus proposed an (arbitrary) limit of a 2-deg C rise in global mean temperature. His nephew Ted argues it's now doing more harm than good. https://www.foreignaffairs.com/articles/2018-02-08/two-degree-delusion?cid=soc-tw-rdr … via @ForeignAffairs

    9:20 PM - 8 Feb 2018
    • 83 Retweets
    • 178 Likes
    • Harvey elsa Hiroo Yamagata Raha Himanshu Singhal Bo Winegard Leandro Cardoso Nicholas Sayer Anaala Richardson
    3 replies 83 retweets 178 likes
      1. New conversation
      2. Per Björklund‏ @perbjoerklund Feb 9
        Replying to @sapinker @mark_lynas @ForeignAffairs

        I'm afraid this entire article falls victim to lukewarmism.

        1 reply 0 retweets 1 like
      3. 1 more reply
      1. New conversation
      2. Richard Tol‏Verified account @RichardTol Feb 9
        Replying to @sapinker @TedNordhaus @ForeignAffairs

        Bill never proposed that.

        1 reply 0 retweets 0 likes
      3. Ted Nordhaus‏ @TedNordhaus Feb 9
        Replying to @RichardTol @sapinker @ForeignAffairs

        He chose it for a modeling exercise. He acknowledged it was arbitrary. Relevant text here. http://pure.iiasa.ac.at/365/1/WP-75-063.pdf …pic.twitter.com/ezWrAEGdkl

        1 reply 0 retweets 1 like
      4. Richard Tol‏Verified account @RichardTol Feb 9
        Replying to @TedNordhaus @sapinker @ForeignAffairs

        Indeed. And he changed his tune soon after, thanks to the late great Ralph d'Arge.

        1 reply 0 retweets 0 likes
      5. Ted Nordhaus‏ @TedNordhaus Feb 9
        Replying to @RichardTol @sapinker @ForeignAffairs

        yes, his modeling consistently showed economically optimal mitigation path took ppm well beyond 450

        1 reply 0 retweets 0 likes
      6. Richard Tol‏Verified account @RichardTol Feb 9
        Replying to @TedNordhaus @sapinker @ForeignAffairs

        shows / takes, not showed / took or do you know something I do not?

        1 reply 0 retweets 0 likes
      7. Ted Nordhaus‏ @TedNordhaus Feb 9
        Replying to @RichardTol @sapinker @ForeignAffairs

        no, i haven't actually looked at it in a while but my sense was that more recent DICE runs have found economically optimal to be lower than past runs...

        1 reply 0 retweets 0 likes
      8. Richard Tol‏Verified account @RichardTol Feb 9
        Replying to @TedNordhaus @sapinker @ForeignAffairs

        good DICE has indeed advocated more stringent climate policy in recent years

        0 replies 0 retweets 0 likes
      9. End of conversation

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