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In the context of EA, Shapley values are a method for assigning credit for the impact of an intervention to each of a set of actors collaborating to make it happen. The concept of a Shapley value comes from cooperative game theory, where it is a general solution to the problem of distributing gains from cooperation. In impact assessment, it is often compared...

The fragile world hypothesis is the hypothesis that 'if technological development continues indefinitely, systemic fragility will increase to the point that the possibility of a shock sufficient for complete collapse approaches certainty.'[1]

Closely related to the concept of a 'global polycrisis':

Established concepts, such as “systemic risk” (Renn 2016; Renn

...

Charity Entrepreneurship's Research Training Program aims to train aspiring researchers to rapidly produce high-quality decision-relevant research.

Related entries

Ambitious Impact | Research | Cause prioritization | Cause candidates

The Open Philanthropy AI Worldviews Contest was a 2023 competition organized to surface novel considerations that could influence Open Philanthropy’s views on AI timelines and AI risk. A total of $225,000 in prize money was awarded across six winning entries. The contest served as the formal successor to a 2022 preannouncement and as a spiritual successor to...

The Unjournal is an organisation that works to organize and fund public journal-independent feedback, rating, and evaluation of hosted papers and dynamically-presented research projects. Their initial focus is on quantitative work that informs global priorities, especially in economics, policy, and social science. They aim to encourage better research by making...

Value erosion refers to a process by which competitive dynamics could eventually lead to "the proliferation of forms of life (countries, companies, autonomous AIs) which lock-in bad values", if those forms of life outcompete others (Dafoe, 2020). 

Further reading

Dafoe, Allan (2019) Value erosion for FHI July 2019, July 25.

Bostrom, Nick (2004) The...

When human-level AI will emerge (AI timelines)  is a consideration for both  AI risk interventions and other interventions. For example, one's AI timelines affect how much to discount interventions that have a delayed effect. 

Related entries

AI forecasting | AI risk | Temporal discounting

Proliferation is the spread of weapons, technologies, or things useful in producing weapons or technologies to actors who did not previously have those things. The term "proliferation" is especially associated with the spread of weapons of mass destruction - such as nuclear weapons - or of technologies or materials useful in producing them. The term diffusion...

Guesstimate is a web-based spreadsheet tool built to focus on uncertainty. It's useful for fermi estimates and collaborative modelling.

External links

Guesstimate official website

Guesstimate documentation

Related Entries

Tools for Collaborative Truth Seeking | Squiggle | QURI

Tutorial

Video tutorial available here, text tutorial below. 

Why use guesstimate?

Guesstimate...

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A week for discussing funding strategy, broadly construed. 

Funding Strategy Week (2025)

A week for discussing funding strategy, broadly construed. 

A two-long series of events on the EA Forum, aimed at causing more and better donations, and reaching new audiences. 
 

DatesNov 10-16Nov 17-23Nov 24-Dec 7Dec 8-14Dec 15-EOY
EventFunding Strategy WeekMarginal Funding Week

Donation Election

 

‘Why I donate’ week

Donation Celebration Banner

 

More details in the announcement post

Giving Season (2025)

A two-long series of events on the EA Forum, aimed at causing more and better donations, and reaching new audiences. 
 

DatesNov 10-16Nov 17-23Nov 24-Dec 7Dec 8-14Dec 15-EOY
EventFunding Strategy WeekMarginal Funding Week

Donation Election

 

...

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The Essays on Longtermism Competition (EoL Competition) iswas an essay contest on the Effective Altruism Forum, co-organized by the Forum team and the editors of Essays on Longtermism: Present Action for the Distant Future (Oxford University Press, 2025). 

The competition encouragesencouraged rigorous philosophical engagement with longtermism—the view that positively influencing the long-term future is a key moral priority of our time. Participants arewere invited to submit essays in response to a chapter, or (substantiated) theme from the collection before October 20, 2025 (anywhere on earth). 

NOTE: THE DEADLINE FOR THE COMPETITION HAS NOW PASSED. YOU CAN STILL SUBMIT ESSAYS WITH THE TAG, AND THEY WILL BE CONSIDERED FOR A BEST-OF SEQUENCE, BUT WON'T BE ELIGIBLE FOR THE PRIZE. 

This year's Draft Amnesty Week will run from February 24th to March 2nd.2nd, and, from October 13th - 19th. Draft Amnesty is an event where Forum users can post scrappy, draft-y, or incomplete posts with impunity.

Soil animals

The Essays on Longtermism Competition (EoL Competition) is an essay contest on the Effective Altruism Forum, co-organized by the Forum team and the editors of Essays on Longtermism: Present Action for the Distant Future (Oxford University Press, 2025). 

The competition encourages rigorous philosophical engagement with longtermism—the view that positively influencing the long-term future is a key moral priority of our time. Participants are invited to submit essays in response to a chapter, argument, or (substantiated) theme from the collection before October 20, 2025 (anywhere on earth). 

Greaves, Hilary & MacAskill, William (2021). The Case for Strong Longtermism.

Ord, Toby (2020). The Precipice: Existential Risk and the Future of Humanity.

The tag was rejected because it hasn’t yet been applied to at least three posts by different authors.

Rejected: No description provided and only 4 posts, 3 of which were by the same author. Did not meet the minimum criteria of being applied to 3 posts by different authors.

Provisional tag — moderators may want to change the name, or delete this if it doesn't seem separate enough from the "Forecasting" tag. Could also be "betting on beliefs", though that still isn't very specific.

Some people use betting as a way to signal the strength of their views; they might offer a bet as a way to identify a crux in a debate, or challenge a critic they view as insincere.

This tag tracks posts where people make public bets on their beliefs (or discuss the practice of doing so).

Betting

Provisional tag — moderators may want to change the name, or delete this if it doesn't seem separate enough from the "Forecasting" tag. Could also be "betting on beliefs", though that still isn't very specific.

Some people use betting as a way to signal the strength of their views; they might offer a bet as a way to identify a crux in a debate, or challenge a critic they view as insincere.

This tag tracks posts where people make public bets on their beliefs (or discuss the practice of doing so).

The Essays on Longtermism Competition (EoL Competition) is an essay contest on the Effective Altruism Forum, co-organized by the Forum team and the editors of Essays on Longtermism: Present Action for the Distant Future (Oxford University Press, 2025). The competition encourages rigorous philosophical engagement with longtermism—the view that positively influencing the long-term future is a key moral priority of our time. Participants are invited to submit essays in response to a chapter, argument, or theme from the collection before October 20, 2025 (anywhere on earth). 

Further reading

Barrett, Jacob; Greaves, Hilary; Thorstad, David (eds.) (2025). Essays on Longtermism: Present Action for the Distant Future. Oxford University Press.

Greaves, Hilary & MacAskill, William (2021). The Case for Strong Longtermism.

Ord, Toby (2020). The Precipice: Existential Risk and the Future of Humanity.

Effective Altruism Forum (2025). Announcing: The Essays on Longtermism Competition.

Related entries

longtermismforecastingmoral philosophyEvents on the EA Forumprizes and contests 

'Essays on Longtermism' Competition

NOTE: THE DEADLINE FOR THE COMPETITION HAS NOW PASSED. YOU CAN STILL SUBMIT ESSAYS WITH THE TAG, AND THEY WILL BE CONSIDERED FOR A BEST-OF SEQUENCE, BUT WON'T BE ELIGIBLE FOR THE PRIZE. 

The Essays on Longtermism Competition (EoL Competition) was an essay contest on the Effective Altruism Forum, co-organized by the Forum team and the editors of Essays on Longtermism: Present Action for the Distant Future (Oxford University Press, 2025). 

The competition encouraged rigorous philosophical engagement with longtermism—the view that positively influencing the long-term future is a key moral priority of our time. Participants were invited to submit essays in response to a chapter, or (substantiated) theme from the collection before October 20, 2025 (anywhere on earth). 

Further reading

Barrett, Jacob; Greaves, Hilary; Thorstad, David (eds.) (2025). Essays on Longtermism: Present Action for the Distant Future. Oxford University Press....

(Read more)

The 10% Pledge is a public, non-binding commitment to donate at least 10% of one’s income each year to the most cost-effective charities or funding opportunities one can identify. It is administered by Giving What We Can (GWWC) and serves both as a personal commitment device and as a norm-setting tool within the effective altruism community.tool.