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NunoSempere

Karma: 2,646

I am an independent research and programmer working at my own consultancy, Shapley Maximizers ÖU. I like to spend my time acquiring deeper models of the world, and generally becoming more formidable. I’m also a fairly good forecaster: I started out on predicting on Good Judgment Open and CSET-Foretell, but now do most of my forecasting through Samotsvety, of which Scott Alexander writes:

Enter Samotsvety Forecasts. This is a team of some of the best superforecasters in the world. They won the CSET-Foretell forecasting competition by an absolutely obscene margin, “around twice as good as the next-best team in terms of the relative Brier score”. If the point of forecasting tournaments is to figure out who you can trust, the science has spoken, and the answer is “these guys”.


I used to post prolifically on the EA Forum, but nowadays, I post my research and thoughts at nunosempere.com /​ nunosempere.com/​blog rather than on this forum, because:

But a good fraction of my past research is still available here on the EA Forum. I’m particularly fond of my series on Estimating Value. And I haven’t left the forum entirely: I remain subscribed to its RSS, and generally tend to at least skim all interesting posts.


I used to do research around longtermism, forecasting and quantification, as well as some programming, at the Quantified Uncertainty Research Institute (QURI). At QURI, I programmed Metaforecast.org, a search tool which aggregates predictions from many different platforms, which I still maintain. I spent some time in the Bahamas as part of the FTX EA Fellowship. Previously, I was a Future of Humanity Institute 2020 Summer Research Fellow, and then worked on a grant from the Long Term Future Fund to do “independent research on forecasting and optimal paths to improve the long-term.” I used to write a Forecasting Newsletter which gathered a few thousand subscribers, but I stopped as the value of my time rose. I also generally enjoy winning bets against people too confident in their beliefs.

Before that, I studied Maths and Philosophy, dropped out in exasperation at the inefficiency, picked up some development economics; helped implement the European Summer Program on Rationality during 2017, 2018 2019, 2020 and 2022; worked as a contractor for various forecasting and programming projects; volunteered for various Effective Altruism organizations, and carried out many independent research projects. In a past life, I also wrote a popular Spanish literature blog, and remain keenly interested in Spanish poetry.


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US credit rat­ing down­graded, $1T in Gulf state in­vest­ments in the US, Kur­dis­tan Work­ers’ Party dis­banded | Sen­tinel Global Risks Weekly Roundup #20/​2025

NunoSempere19 May 2025 17:59 UTC
22 points
0 comments10 min readLW link
(blog.sentinel-team.org)

Global Risks Weekly Roundup #19/​2025: In­dia/​Pak­istan ceasefire, US/​China tar­iffs deal & OpenAI non­profit control

NunoSempere12 May 2025 17:08 UTC
10 points
1 comment13 min readLW link
(blog.sentinel-team.org)

Global Risks Weekly Roundup #18/​2025: US tar­iff short­ages, mil­i­tary polic­ing, Gaza famine.

NunoSempere6 May 2025 10:39 UTC
31 points
2 comments3 min readLW link
(blog.sentinel-team.org)

The US Ex­ec­u­tive vs Supreme Court De­por­ta­tions Clash

NunoSempere21 Apr 2025 19:56 UTC
44 points
12 comments7 min readLW link
(blog.sentinel-team.org)

Sen­tinel’s Global Risks Weekly Roundup #15/​2025: Tar­iff yoyo, OpenAI slash­ing safety test­ing, Iran nu­clear pro­gramme ne­go­ti­a­tions, 1K H5N1 con­firmed herd in­fec­tions.

NunoSempere14 Apr 2025 19:11 UTC
42 points
0 comments2 min readLW link
(blog.sentinel-team.org)

Asun­ción – ACX Mee­tups Every­where Spring 2025

NunoSempere25 Mar 2025 23:49 UTC
7 points
0 comments1 min readLW link

Sen­tinel’s Global Risks Weekly Roundup #12/​2025: Famine in Gaza, H7N9 out­break, US geopoli­ti­cal lead­er­ship weak­en­ing.

NunoSempere24 Mar 2025 16:46 UTC
13 points
0 comments7 min readLW link
(blog.sentinel-team.org)