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Astral Codex Ten published Open Thread 454 as a weekly forum for reader questions and discussion. The post also updates an EA college meetup, links newly translated Fatima documents and past book review collections, and introduces Physicians For AI Safety; author Scott Alexander says he has been busy and expects to resume a fuller publishing schedule later.
The post describes the thread as the site’s weekly open forum, where readers can ask random questions or discuss other subjects. It points readers to an unofficial subreddit, Discord server and bulletin board, as well as in-person meetups around the world. The site’s content is mostly free, with some material reserved for subscribers, according to the post.
One community notice says Brigham Young University’s EA college meetup has changed its time, date and location. Readers are directed to check the meetup list for the revised details; the post itself does not provide the new schedule or venue.
The post credits reader Nikita Sokolsky with obtaining additional documents from Portugal related to Fatima and translating them into English. It links to fatima-1917.com for the documents and thanks Ana for work requiring Portuguese proficiency. Separately, Rob Ennals, who created the current year’s book review contest site, has collected reviews from earlier years into downloadable e-books, the post says.
Updates for ACX Readers
The notices connect readers with several ongoing activities around Astral Codex Ten, from local meetups to past book review entries. The meetup schedule change is a practical update for people planning to attend, while the document translations and review archive make material available beyond the original posts or source-language documents.
The mention of Physicians For AI Safety gives physicians interested in AI safety a way to find the group and consider signing its open letter. The post says the group wants to speak with interested physicians, but does not describe its membership, position or the letter’s specific proposals.
Alexander’s note also sets expectations for the site’s publishing pace. He apologizes for having written little recently and for missing a Friday book review entry, attributing the gap to being busy. He says he will try to make up for it after that changes, without giving a date.
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A Weekly Reader Forum
Open Thread 454 follows the format of a recurring community post rather than reporting a single external event. Its main function is to provide a shared place for reader discussion, with a short set of announcements attached. The post refers readers to multiple community channels and meetups, indicating that participation extends beyond the comment thread itself.
The announcements cover separate projects: a change to one college meetup’s logistics, a set of translated documents concerning Fatima, an archive of earlier book reviews, and outreach by a physician-oriented AI safety group. The source provides links for the documents and review collections, but does not include detailed descriptions of their contents.
““This is the weekly visible open thread. Post about anything you want, ask random questions, whatever.””
— Scott Alexander, Astral Codex Ten author
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Details Still Missing
The post does not state the revised BYU meetup time, date or place; readers must consult the linked list. It also does not give a publication date for Open Thread 454, so the timing of the notices cannot be established from the supplied source alone.
The linked Fatima documents and book review e-books are not described in detail in the announcement. The post does not specify which documents were obtained, how many were translated, or what years the review archive covers. It also provides no details about Physicians For AI Safety’s open letter beyond the group’s invitation to physicians.
Alexander does not say when his workload may ease or how many posts he intends to make up. The timing and form of any return to a fuller publishing schedule remain unknown.
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Readers Can Follow Linked Updates
Readers interested in attending the BYU gathering can check the EA college meetup list for the updated logistics. Those looking for the translated Fatima documents or earlier book reviews can follow the respective links in the original post. Physicians interested in AI safety can contact Physicians For AI Safety or review its open letter through the group’s materials.
For the site’s publishing schedule, the only guidance is Alexander’s statement that he will try to make up for recent omissions after his busy period changes. No date or specific next installment is announced.
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Key Questions
What is Open Thread 454?
It is Astral Codex Ten’s weekly open discussion thread, where readers are invited to post questions or discuss any topic.
What changed for the Brigham Young University meetup?
The post says its time, date and place changed. It directs readers to the meetup list for the new details, which are not included in the post.
Where can readers find the Fatima documents and book reviews?
The post links to fatima-1917.com for additional documents from Portugal translated into English. It also says Rob Ennals gathered earlier book review contest entries into e-books; the announcement links to those collections.
What is Physicians For AI Safety asking physicians to do?
The group says it is interested in talking with physicians who care about AI safety and has an open letter those physicians can sign. The post does not detail the letter’s contents.
When will Astral Codex Ten return to its usual posting pace?
No date is given. Scott Alexander says he has been busy and will try to make up for recent reduced output once that changes.
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