Chicago Rationality

Welcome to the homepage for the Chicago Rationality meet-up group. Our group includes people interested in Rationality, Effective Altruism, and more. Many people find us through weird corners of the internet like LessWrong, Slate Star Codex/Astral Codex Ten, Overcoming Bias,  Marginal Revolution, and other Rationalist-adjacent sites.

If you’re interested in hanging out in real life with other people interested in these kinds of ideas, attend our next meet-up! We typically do one “topical” meet-up per month focused on a specific reading suggested by a group member and one “social” meet-up per month with no particular agenda.

It’s ok to come if you’re not sure if you’ll fit in, if you’re not the “typical” kind of person who would attend a meet-up like this, or you’re just kind of intimidated by coming to a new social event. Feel free to reach out to us with any questions as well:

If you’d like to be notified of upcoming meet-ups and social events, please fill out the form below and you’ll be added to our mailing list. We usually send out emails a few times per month.


Click through on the event description for more details including address, suggested reading, etc.

You can also add this calendar to your calendar of choice


July 2020 Meetup: Modularity and Problem Solving

And here’s the suggested reading (reading any one of these should be sufficient): “The Network Structure of Exploration and Exploitation”from David Lazer and Allan Friedman “Modular structure within groups causes information loss but can improve decision accuracy”from Albert Kao Press release: Two podcasts from SFI discussing these topics: Nicole Creanza

Read More »

May 2020 Meetup: Harmful Knowledge

The topic: Is any knowledge inherently harmful, on either an individual or a societal level? The readings:• from Scott Alexander:• from Nick Bostrom:• from Wired, concerning Bostrom: The readings are not limiting factors — participants are encouraged to think Outside the Box™ to come up with possible examples of inherently

Read More »

March 2020 Meetup: Democracy as an Epistemic System

Chicago Rationalist—Topic List Archive 1. Is democracy a system which produces pervasive error in our society? i.e. moldbug strikes again ( Should proponents of free markets oppose capitalism? (chapters 4 and 9 of this book: What is an optimal course of action when you encounter a situation in which

Read More »

Links and REsources

Looking for more internet to read? Curious about what Rationality groups talk about? Want to go go to other meetups in Chicago? Here are some helpful links: