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LessWrong Review

Edited by Ruby, Multicore, Ben Pace, et al. last updated 10th Mar 2025

The LessWrong Annual Review is a central mechanism for reviewing the site's content, it's kind of like our site's peer review process. 

LessWrong has the goal of making intellectual progress on important problems. To make progress, you gotta examine your community's outputs not only when they're first published, but also once enough time has passed to see whether they continued to provide value after initial hype fades and flaws have had time to surface.

So far, the bulk of the LessWrong Review happens in the winter season, over December and January. Batched yearly, we review the posts from the previous year. 2019's post get reviewed at the end of 2020 (i.e. every post in each review batch is 1-2 years old).

For two months, the community nominates, writes reviews, and votes on the most valuable posts. Reviewers ask questions like:

  • Does this post continue to affect my thinking or actions even 12+ months later?
  • Do its claims still seem valuable or interesting even now?
  • Was it invalidated by further work or other criticisms that came up?
  • Which follow-up work do I still wish someone would do?

The community answering these questions leads to benefits like:

  • We create broad knowledge about which ideas and results turned out to be robust and future work can be built upon (and which ideas failed to achieve that).
  • Out of the thousands of posts published each year, we can direct the attention of future readers to the most valuable content.
    • e.g. via the creation of Sequences, [e]books, etc.
  • We can better reward and incentivize the thinkers whose contributions were most valuable.

You can see the top posts from previous years on the Best of LessWrong page. You can see the individual results page for each Annual Review so far: 2018, 2019, 2020, 2021.

What is the Review process?

[New!] The LessWrong team is currently experimenting with ways to give the Annual Review year-long salience, i.e. by giving people the ability to bet in prediction markets about which posts will be rated highly in the Review, and by giving Review "winners" prominent treatment (e.g. cool art on their post pages).

For the last few years, the Annual Review has followed the same three-stage template:
1. A couple of weeks of nominating posts for consideration in the review.
2. A month of writing reviews and critiques of posts.
3. Two final weeks voting on which posts were ultimately most valuable.

The exact process of the Annual Review is not locked in stone and the LessWrong team might decide to change it dramatically in the future. That said, for the past five years it has followed approximately the same basic format:

  1. Preliminary Voting Phase (2 weeks): We identify posts especially worthy of consideration in the review casting preliminary votes. Posts with 2 preliminary votes move into the Discussion Phase.
  2. Discussion Phase (4 weeks): We review and debate posts. Posts that receive at least one written review move to the final voting phase.
  3. Final Voting (2 weeks): We do a full voting pass, using quadratic voting. The outcome determines the Annual Review results.

Here's a table of all the posts by year that were part of this process.

YearLaunchReviewVotingResultsBookPrizes.Misc
2018LaunchReviewVotingResultsBookPrizesI, II, III, IV
2019Launch[None]VotingResultsBookPrizes 
2020LaunchReviewVotingResultsBookPrizes 
2021LaunchReview[None]Results[None]Prizes (I, II)I
2022LaunchReviewVotingResultsNew Art 1
2023LaunchReview[None]Results   
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Posts tagged LessWrong Review
101The LessWrong 2018 Review
Raemon
6y
91
108Voting Results for the 2020 Review
Raemon
4y
17
174Book Launch: The Engines of Cognition
Ben Pace
4y
56
57Voting Results for the 2022 Review
Ben Pace
2y
3
992019 Review: Voting Results!
Raemon, habryka
5y
36
66Voting Results for the 2021 Review
Raemon
3y
10
1352018 Review: Voting Results!
Ben Pace
6y
59
187The LessWrong 2018 Book is Available for Pre-order
Ben Pace, Bird Concept
5y
110
112The 2020 Review
Raemon
4y
39
95The LessWrong 2021 Review: Intellectual Circle Expansion
Ruby, Raemon
3y
55
742020 Review Article
Vaniver
4y
3
115The LessWrong 2022 Review
habryka
2y
43
45Reviewing the Review
Raemon
6y
16
34The 2021 Review Phase
Raemon
3y
7
131Book Launch: "The Carving of Reality," Best of LessWrong vol. III
Raemon
2y
22
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