The GiveWell Blog

Making Predictions about Our Grants

From sports announcers to political pundits to friends gossipping about romantic interests, lots of people make probabilistic predictions about the future. But only some actually follow up to see how well their predictions performed. For instance, you may have heard that weather forecasters predicted that the 2024 hurricane season had an 85% chance of being more active than normal and there would be 17 to 25 named storms. But in September, they were surprised that so far, it had been unexpectedly quiet, with climate change likely affecting weather patterns in ways scientists don’t fully understand.

GiveWell researchers often make forecasts about activities, milestones, and outcomes of the programs and research studies we recommend funding for, as well as decisions that GiveWell will make in the future. For example, we might forecast whether we’ll fund more hospital programs to implement Kangaroo Mother Care programs by 2027, or whether data collected about how many people are using chlorinated water will align with our expectations.

As a way to solicit external feedback on some of our predictions, we just launched a page on Metaculus, an online forecasting platform. Periodically, we will post forecasts there about GiveWell’s research and grants for the public to make their own predictions. Metaculus and other contributors will award $2,250 in prizes to people who leave insightful comments on a select group of forecasting questions. The deadline for comments is December 1, 2024.

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GiveWell’s 2022 metrics report

In 2022, the most recent year for which data is available and analyzed, GiveWell raised the largest amount of money in our history, over $600 million. We thank our donors for continuing to trust us to find and recommend highly cost-effective giving opportunities. The following table summarizes our funds raised and our funds directed to programs in metrics year 2021 and 2022.

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The winners of the Change Our Mind Contest—and some reflections

In September, we announced the Change Our Mind Contest for critiques of our cost-effectiveness analyses. Today, we’re excited to announce the winners!

We’re very grateful that so many people engaged deeply with our work. This contest was GiveWell’s most successful effort so far to solicit external criticism from the public, and it wouldn’t have been possible without the participation of people who share our goal of allocating funding to cost-effective programs.

Overall, we received 49 entries engaging with our prompts. We were very happy with the quality of entries we received—their authors brought a great deal of thought and expertise to engaging with our cost-effectiveness analyses.

Because we were impressed by the quality of entries, we’ve decided to award two first-place prizes and eight honorable mentions. (We stated in September that we would give a minimum of one first-place, one runner-up, and one honorable mention prize.) We also awarded $20,000 to the piece of criticism that inspired this contest.

Winners are listed below, followed by our reflections on this contest and responses to the winners.

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Announcing the Change Our Mind Contest for critiques of our cost-effectiveness analyses

We’re extremely excited to be announcing the Change Our Mind Contest to encourage critiques of our cost-effectiveness analyses that could lead to substantial improvements of our overall allocation of funds. For all the details, see this page.

Cost-effectiveness is the single most important input in our decisions about what programs to recommend, and we believe it’s possible that we’re missing important considerations or making mistakes that lead us to allocate funding suboptimally. We’ve been excited to see people engaging with our cost-effectiveness analyses, and we’d like to inspire more of that engagement.

With that in mind, we’re inviting you to identify potentially important mistakes or weaknesses in our existing cost-effectiveness analyses and tell us about them!

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GiveWell’s 2021 metrics report

In 2021, GiveWell directed the largest amount of money in our history, over $500 million, which we believe will be beneficial or life saving to many people in need. We thank our donors for continuing to trust us to find and recommend some of the most highly cost-effective giving opportunities in the world.

Note that this year, we’ve also updated our metrics report to more clearly communicate about our work. Previously, we reported on our “money moved,” a metric that tried to provide a composite picture of both the funds we raised and directed in a given year. However, starting with our 2021 report, we’ll be reporting on these metrics separately as “funds raised” and “funds directed,” which we believe will be simpler and clearer.

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