开放讨论帖459：分享任何内容或提问

This is the weekly visible open thread. Post about anything you want, ask random questions, whatever. ACX has an unofficial subreddit, Discord, and bulletin board, and in-person meetups around the world. Most content is free, some is subscriber only; you can subscribe here. Also:1: Comment of the week: “Astronomer here. It’s absolutely untrue that there are millions of WOW signals.”2: There will be marches in favor of an AI treaty this Saturday (11/14) in major cities across the US, Canada, and France, including San Francisco and DC. See here for more information.