Scott announces the 2026 book review contest with a May 20th deadline, requiring anonymized submissions via Google Form, offering prizes of at least $2,500/$1,000/$500 for the top three winners. Longer summary

Scott announces the 2026 book review contest with rules and guidelines. Entries should be book reviews between 2,000-10,000 words, submitted via Google Form with an anonymized Google Doc by May 20th. The contest will have a finalist selection round voted on by readers in spring, with finalists posted weekly through summer, followed by final voting in late summer/fall. Prizes are at least $2,500 for first place, $1,000 for second, and $500 for third, plus publicity, free subscriptions, and potential writing opportunities. Scott emphasizes the contest should be blind (no identifying information in the document itself) and notes he may provide mild affirmative action for nontraditional categories like fiction, poetry, or pre-1900 books. Shorter summary

The 2026 ACX/Metaculus prediction contest is now open with a $10,000 prize pool, featuring reader-submitted questions, and Scott announces the winners of the best question submission contest. Longer summary

Scott announces the 2026 ACX/Metaculus prediction contest is live, with questions suggested by ACX readers covering US politics, AI, international affairs, and culture. Predictions must be submitted by January 17th to be eligible for the $10,000 prize pool, though participants can continue updating forecasts afterward for site leaderboards. The post also lists the winners of the best question submission contest, with prizes ranging from $150 to $700. Shorter summary

Scott Alexander announces the second Adversarial Collaboration Contest, where people with opposing views collaborate on essays about controversial topics for prizes. Longer summary

Scott Alexander announces the second annual Adversarial Collaboration Contest on his blog. The contest encourages people with opposing views to collaborate on a balanced summary of evidence on a controversial topic. Participants form teams of two, write an essay together, and can win prize money. The post outlines the contest rules, including essay requirements, submission process, and judging criteria. Scott provides examples from the previous year's contest and explains how to find a collaboration partner through the blog's comments section. Shorter summary

Scott Alexander provides instructions for participants to connect, register for the adversarial collaboration contest, and mentions potential additional prizes. Longer summary

Scott Alexander is following up on his previous post about an adversarial collaboration contest. He encourages participants from the last thread to connect with potential partners and finalize their agreements. Scott announces he will post two comments: one for coordination to help participants exchange contact information, and another for official contest registration. He asks teams who have formed to register either in the comments or by email. Scott also mentions that additional prize money has been offered, which he's considering using for a prize for the best post-contest reflection on the collaboration process. Shorter summary