Tayfun Sönmez

Sezai Yılmaz hocamızın Malatya’da Avrupa’nın en başarılı karaciğer nakil merkezlerinden birini kurmasının ve sonrasında yollarımızın kesişerek dünyanın en etkili karaciğer çapraz nakil sistemini en kıymetlimiz-rahmetli eşim-Banu’nun anısına kurmamızın hikayesi🫶

www.fortuneturkey.com/malatyayi-du...

But during yesterday’s operations, the O donor’s graft proved larger and perfect for a direct transplant to their patient. Still able to perform a 2-way exchange for other pairs, the superior direct transplant was performed. This highlights how crucial exchange system is, even when plans change!

Yesterday, our amazing İnönü University partners showcased dynamic nature of liver exchange! We had an O blood-type patient with a O blood-type donor in a planned 3-way exchange. Pre-op calculations suggested graft size was too small for a direct transplant.

Lecture slides are available in the following page: www.tayfunsonmez.net/mini-course/

Please join us for the 4-lecture mini course I will give on minimalist market design at University of StGallen this week. The course is open to all and available both in person and via zoom. See below for the registration info and the link in the next comment for the course slides.

Congratulations Stefanie Stantcheva @s-stantcheva.bsky.social for this great recognition 👏 Very well-deserved 🏅

The Turkish opposition held a massive rally today in one of Erdoğan’s most loyal strongholds. A farmer nailed it: "You can’t run a country with radish and turnip. You run it with truth, law, and justice." The turnip bit might be a coincidence — but it still lands a little too well in the U.S.

Ülkeyi Yurt Kılmanın Peşinde: 2025 Baharından Geleceğe Bakmak - #ayrım Cenk Saraçoğlu yazdı...

Enfes bir analiz 👌

www.ayrim.org/guncel/ulkey...

Unfortunately, this post has aged far better than I ever wished it would 👇 #EconSky

Turkish Opposition Asks Erdogan If US Approved Rival’s Arrest Turkey’s opposition leader Ozgur Ozel on Sunday challenged President Recep Tayyip Erdogan to say whether he received approval from the Trump administration for the recent arrest of Erdogan’s main riva...

A collusion of autocrat wannabes: According to CHP leader Özgür Özel, Erdoğan secured Trump’s tacit approval for the arrest of Turkey’s opposition leader—while Trump, in turn, has been increasingly embracing Erdoğan-style authoritarian tactics.
www.bloomberg.com/news/article...?

Şu an verdiğimiz mücadele sadece Türkiye’nin değil, dünyadaki bütün demokratların otokratlara karşı verdiği ortak bir mücadele…

Given the strong parallels between leadership styles of Trump and Erdogan, and the rapid deterioration of democratic institutions in the US, the same headline equally applies to Americam democracy 🙁

Bu paylaşımda The Guardian gazetesine haksızlık yapıldığı düşüncesindeyim. Hem Türkiye hem bütün dünyada otokrasi karşıtı, merkez sol ve sosyal olarak liberal görüşü temsil eden bir gazetedir. Keza bu başlığı atması da Türkiye’deki muhalefete güçlü desteğinin göstergesidir.

Uluslararası akademik camiada özellikle 2024 Aralık ayı sonrasında Bluesky platformuna yoğun bir geçiş oldu. Ben de o dönem katıldım.

Before his arrest on bogus charges, opposition presidential candidate Ekrem İmamoğlu said: “No salvation alone; either all of us together, or none of us.” His words echo far beyond Turkey — a powerful call to unite against authoritarianism.

Here's an open letter to the American people, that I was proud to sign along with thousands of other members of the National Academy of Sciences #EconSky #AcademicSky
marketdesigner.blogspot.com/2025/03/open...

Congestion and congestion pricing: Ostrovsky and Kominers (QED) #Econsky #congestion
marketdesigner.blogspot.com/2025/03/mike...

Donald Trump's return to office: Ten consequences Donald Trump’s second presidency is shaking up the geopolitical landscape. Most of the consequences are harmful, but some are beneficial.

Excellent analysis…

www.cer.eu/insights/don...

Erdogan, during his tenure as Mayor of Istanbul in 1990s famously stated “Democracy is like a train: when we reach our destination, we get off.” More than 2 million people gathered today in Istanbul (despite a 9 day holiday) to show Turkish people’s commitment to democracy.

Before his arrest on bogus charges, opposition presidential candidate Ekrem İmamoğlu said: “No salvation alone; either all of us together, or none of us.” His words echo far beyond Turkey — a powerful call to unite against authoritarianism.

Musk’s X suspends opposition accounts in Turkey amid civil unrest Suspensions affect accounts spreading information about the widespread demonstrations.

Trump’s policies embolden the Erdoğan regime to push Turkey toward full-blown dictatorship, while Musk’s X suspends opposition accounts amid civil unrest. www.politico.eu/article/musk...

ERP-HSG Lecture with Prof. Tayfun Sönmez: “Minimalist Market Design for Organ Transplantation” In this public ERP-HSG Lecture, Prof. Tayfun Sönmez (Boston College) explores the transformative impact of “minimalist market design” in organ transplantation and beyond. Drawing on two decades of res...

Truly looking forward to this event. Please join the subsequent mini course I will give on minimalist market design if you are close by to St. Gallen in late May.

www.unisg.ch/en/news/even...

Wtf seems about right 😡

Last year @shengwuli.bsky.social pointed out that the core tenet of my minimalist market design framework—"Don't fix what's not broken"—echoes Chesterton’s Fence (now discussed in Section 2.2.2). In an age of Trumpian & DOGE policies, this tenet feels especially relevant. arxiv.org/pdf/2401.00307

Fantastic research program offering solutions to challenges Boston Public Schools officials faced 2 decades ago when choosing between the Deferred Acceptance and Top Trading Cycles. The framework by ‪@charmelades.bsky.social & @aromeromedina.bsky.social could have served as an innovative compromise.

Congratulations Lise 👏 Very well deserved 🏆

Thank you, Al, for promoting our collaborators' work. You can more learn about the background of how we initiated the Liver Paired Exchange Program in Malatya in Section 12.3 of the manuscript of @tayfunsonmez.bsky.social

arxiv.org/pdf/2401.003...

In these difficult times, we find solace in the achievements of our partners in Malatya, Turkey, who performed their fifth 6-way liver exchange today 👏 Having performed 29 LE transplants in 2025 through the Banu Bedestenci Sönmez LPE system, they are on track to surpass their record of 122 in 2024 🥇

For years, I have argued that there should be a penalty for producing non-impactful research, especially in top outlets. Such a mechanism would deter the producing mediocre research, whether generated with or w/o AI. It would also help curb the undue advantage held by gatekeepers in academia.

Opposition from civil society is no doubt important, but it's effective, organized, *unified* political opposition that is needed to reverse the authoritarian slide. That at least is the lesson I draw from (the failures of the opposition parties in) Erdogan's Turkey. Looking at you, Democrats!