MIT Professor of Economics | Macro, International, Public, Monetary, Taxes, Finance | v = u β v | Beatles | Optimal Luddite | Boston Argentina

Joined April 2009
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Replying to @IvanWerning

Replying to @IvanWerning
Link to paper… (or DM or email me) dropbox.com/scl/fi/jtra55dcz… cc'ing the great Guido, follow him: @guido_lorenzoni That's all FOLKS! It was a lot, sorry!
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Few years back I asked Ben for some references (for Inflation is Conflict) and got Berman-Plemmons, joyful book! It presents theorems not about networks, but theorems that ARE networks... Chapters are also in network structure. Then I knew why Ben liked it so much... 🤔
I'm delighted that this short survey, a labor of love, is forthcoming in Notices of the AMS later this month. I'll post a few threads over the next few weeks. Today: why do eigenvectors keep showing up in models of networks and influence?! 1/
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World Cup: Some Unpleasant Discounted Arithmetic? 🏆⭐️ How many cups have you won after discounting old wins? Count a cup N cups ago as R^N with R<1 I'm a macroeconomist, so this was inevitable. Also Argentina! 🇦🇷 (details and link in reply)
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Update: Pooled Germany… (despite competing with 2 teams in '74) In this table: No value on runner ups. 2nd column R=0.85. Third column: R=0.95 (mex 86 worth 0.63).
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For those arguing for R=1... Would you rather… ¯\_(ツ)_/¯ … have won first 5 cups (>70 years ago) or … have won the last 5 cups? (<20 years) give me a break! 😆
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Ivan Werning retweeted
Update: Pooled Germany… (despite competing with 2 teams in '74) In this table: No value on runner ups. 2nd column R=0.85. Third column: R=0.95 (mex 86 worth 0.63).
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Thanks all for all the reactions, comments and suggestions... We've update the paper!... ... might even be converging!🌀
Excited to FINALLY release toughest most rewarding paper I've worked on... ….we attack a 150 year old Walras question that's gone unanswered, not for lack of trying (Hicks, Samuelson, Arrow; our chances?😱)... Q: Is the market equilibrium stable or unstable?¯\_(ツ)_/¯ 🧵
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Hey @ben_golub you've done a great thing for the profession! Big shout out to @RefineDotInk... first project I've used it for. Absolutely blown away with its "Detailed Feedback" ("overall feedback" understandably more speculative, hit & miss, but may be useful sometimes) What impressed me was... Great attention to details (e.g. notation)... … but with attention to actual logic... ... without losing... big picture or context (e.g. consistency, how things fit). Over months of writing and editing and changing things here and there, especially on a BIG and LONG project like this one, there is a lot of fixing to do and lot of cleaning up to do, of tying this up consistently, etc. and this was invaluable.
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P.S.: this doesn't change my overall Luddite-on-AI outlook. But that's another story for another day.
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Ivan Werning retweeted
Ready to go 🎈
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Had fun presenting our paper on a modern treatment of Tâtonnement price dynamic at the Minnesota Macro conference.
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A video for those interested.
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Note: this presentation is almost a year old and had many results, but missing some key newer ones such as 1. stabilization of oscillatory instability and, 2. Hicks is Back conclusion. I'll post a newer one maybe in a few days.
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Scarf was a decade ahead of his time, putting his toes in the "Anything Goes" "Sonnenschein-Mantel-Debreu" results obtained in the 70s. Bummer: Due to income effects aggregate demands are not restricted. (We dedicated our paper to genius Rolf Mantel. My undergraduate teacher.)
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Skipped a lot, lots more in paper. Link at the end. 1. we provide foundations for Walras 2. justify Samuelson's ad hoc equation, but 3. … not the same because of demands 4. reinstate Sir John Hicks 2 forces for stability A. Frisch demands! B. Forwards looking pricing!
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Link to paper… (or DM or email me) dropbox.com/scl/fi/jtra55dcz… cc'ing the great Guido, follow him: @guido_lorenzoni That's all FOLKS! It was a lot, sorry!
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