This is the twice-weekly hidden open thread, but I’m making it visible today so I can make announcements:

1. There’s a new effective altruism survey up by Peter Hurford and Rethink Charity. If you consider yourself interested in or affiliated with EA, please take a look.

2. Sorry I’ve been spamming you all with meetup announcements. I plan to continue to do this for another two weeks or so. Next up are Ann Arbor, Chicago, Austin, Portland, and Seattle. Organizers in these cities, please be prepared for 50 to 100 or more people (if you’re not, let me know and we’ll figure something out). Some groups have had good luck starting at a public place and then having a house/apartment to go to when the public place is closing and the people have thinned out a little. Also please remember to bring a clipboard, paper, and a pen so people interested in future meetups can sign up for a mailing list.

3. Related: the Seoul, South Korea meetup has changed times to Saturday, September 28, 12:30 PM.

4. New advertisement up for the Charter Cities Institute, which is working with developing countries to create special economic zones encouraging innovation and good governance.

5. Comments of the week: CPlusPlusDeveloper explains the case for skepticism in the War on Opiates (I don’t know enough to endorse or deny, but I’m glad to see it put so lucidly). And Theodidactus and AshLael have worked in politics and give insider impressions of how money in politics works (or doesn’t work).

6. SSC-adjacent culture war subreddit r/TheMotte now has its own podcast, The Bailey. Latest episode is on issues surrounding discussing politics at work, with nods to some new Google policy; download it here.