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NunoSempere

Karma: 13,792

I run Sentinel, a team that seeks to anticipate and respond to large-scale risks. You can read our weekly minutes here. 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.


My career has been as follows:


You can share feedback anonymously with me here.

Note: You can sign up for all my posts here: <https://​​nunosempere.com/​​.newsletter/​​>, or subscribe to my posts’ RSS here: <https://​​nunosempere.com/​​blog/​​index.rss>

Sen­tinel: Early De­tec­tion and Re­sponse for Global Catastrophes

rai18 Nov 2025 3:48 UTC
58 points
4 comments10 min readEA link

In­ter­view with a drone ex­pert on the fu­ture of AI warfare

NunoSempere9 Oct 2025 20:20 UTC
46 points
2 comments4 min readEA link
(blog.sentinel-team.org)

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 18:02 UTC
50 points
0 comments1 min readEA link
(blog.sentinel-team.org)

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

NunoSempere12 May 2025 17:11 UTC
16 points
0 comments1 min readEA link

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

NunoSempere6 May 2025 10:39 UTC
22 points
0 comments3 min readEA link
(blog.sentinel-team.org)

The US Ex­ec­u­tive vs Supreme Court De­por­ta­tions Clash

NunoSempere21 Apr 2025 20:57 UTC
25 points
0 comments2 min readEA link
(blog.sentinel-team.org)

Sen­tinel’s Global Risks Weekly Roundup #11/​2025. Trump in­vokes Alien Ene­mies Act, Chi­nese in­va­sion barges de­ployed in ex­er­cise.

NunoSempere17 Mar 2025 19:37 UTC
40 points
0 comments6 min readEA link
(blog.sentinel-team.org)

Sen­tinel min­utes #6/​2025: Power of the purse, D1.1 H5N1 flu var­i­ant, Ay­a­tol­lah against ne­go­ti­a­tions with Trump

NunoSempere10 Feb 2025 17:23 UTC
40 points
2 comments7 min readEA link
(blog.sentinel-team.org)

Scal­ing Wargam­ing for Global Catas­trophic Risks with AI

rai18 Jan 2025 15:07 UTC
73 points
1 comment4 min readEA link
(blog.sentinel-team.org)

Sen­tinel min­utes for week #52/​2024

NunoSempere30 Dec 2024 18:25 UTC
61 points
0 comments6 min readEA link
(blog.sentinel-team.org)

Sen­tinel Fund­ing Memo — Miti­gat­ing GCRs with Fore­cast­ing & Emer­gency Response

Saul Munn6 Nov 2024 1:57 UTC
47 points
5 comments13 min readEA link

How Likely Are Var­i­ous Pre­cur­sors of Ex­is­ten­tial Risk?

NunoSempere22 Oct 2024 16:51 UTC
66 points
7 comments15 min readEA link
(samotsvety.org)

Case study: The Lübeck vaccine

NunoSempere5 Jul 2024 14:57 UTC
48 points
13 comments4 min readEA link
(sentinel-team.org)

A Gen­tle In­tro­duc­tion to Risk Frame­works Beyond Forecasting

pending_survival11 Apr 2024 9:15 UTC
83 points
4 comments27 min readEA link

Un­flat­ter­ing as­pects of Effec­tive Altruism

NunoSempere15 Mar 2024 10:47 UTC
192 points
53 comments1 min readEA link

Long list of AI ques­tions

NunoSempere6 Dec 2023 11:12 UTC
124 points
16 comments86 min readEA link

Rel­a­tive val­ues for an­i­mal suffer­ing and ACE Top Charities

NunoSempere30 May 2023 16:37 UTC
33 points
2 comments4 min readEA link
(nunosempere.com)

A flaw in a sim­ple ver­sion of wor­ld­view diversification

NunoSempere15 May 2023 18:12 UTC
45 points
22 comments6 min readEA link
(nunosempere.com)

A Sooth­ing Fron­tend for the Effec­tive Altru­ism Forum

NunoSempere5 May 2023 19:59 UTC
22 points
4 comments1 min readEA link
(forum.nunosempere.com)

Some es­ti­ma­tion work in the horizon

NunoSempere29 Mar 2023 22:18 UTC
25 points
0 comments4 min readEA link
(nunosempere.com)