Events
Past Event
WED@NICO SEMINAR: Michael Macy, Cornell University "The Unpredictability of Partisan Alignments"
Northwestern Institute on Complex Systems (NICO)
12:00 PM
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Lower Level, Chambers Hall
Details
Speaker:
Michael W. Macy - Goldwin Smith Professor of Arts and Sciences, and Director, Social Dynamics Laboratory, Cornell University
Title:
Which Side Are You On: The Unpredictability of Partisan Alignments
Abstract:
Culture wars” involve the puzzling alignment of partisan identity with disparate policy positions as well as lifestyle choices and personal morality. Explanations point to deep-rooted ideological divisions, core values, moral emotions, and cognitive hardwiring. We used the “multiple worlds” experimental paradigm to test an alternative explanation based on the sensitivity of opinion cascades to the initial conditions. Two online experiments (N=4581) generated cascades by exposing participants to social influence on 20 unfamiliar political and cultural issues. Consistent with recent studies, partisan divisions in the influence condition were much larger than in the control group (without influence). The surprise is that bigger divisions indicate less predictability. Issues backed by Republicans and opposed by Democrats in one experimental “world” had the opposite outcome in other parallel worlds. The unpredictability suggests that what appear to be deep-rooted partisan divisions in our own world may have arisen through a tipping process that might just as easily have tipped the other way. Public awareness of this counter-intuitive possibility has the potential to encourage greater tolerance for opposing opinions.
Speaker Bio:
Michael Macy (B.A., Ph.D Harvard; M.A. Stanford) is Goldwin Smith Professor of Arts and Sciences at Cornell and Director of the Social Dynamics Lab, with a dual appointment in the Departments of Sociology and Information Science. With support from the U.S. National Science Foundation, Minerva Initiative, DARPA, and the National Research Foundation of Korea, his research team has used computational models, online laboratory experiments, and digital traces of device-mediated interaction to explore familiar but enigmatic social patterns, such as circadian rhythms, network topology and economic opportunity, lifestyle politics, the willingness to “pay it forward,” the mesh of civilizations, the spread of complex contagions, the polarization of opinion, segregation of neighborhoods, the emergence and collapse of fads, the spread of self-destructive behaviors, and the critical mass in collective action. His research has been published in leading journals, including Science, PNAS, Science Advances, Nature Human Behaviour, American Journal of Sociology, American Sociological Review, and Annual Review of Sociology.
Live Stream:
Time
Wednesday, September 25, 2019 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
Fall 2026 Classes Begin
University Academic Calendar
All Day
Details
Fall 2026 Classes Begin
Time
Wednesday, September 23, 2026
Contact
Calendar
University Academic Calendar
NICO Reading Group - Fall 2026 First Meeting
Northwestern Institute on Complex Systems (NICO)
6:00 PM
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Chambers Hall
Details
The NICO Reading Group meets for the first this fall on Wednesday, September 23, 2026. Please contact Jaeseon Ha if you are interested in joining our group.
About:
The NICO Reading Group brings together people across disciplines to read and discuss important ideas in modern AI. We focus on topics such as AI agents, tuning, harnesses, evaluation, AI for scientific discovery, and applications of AI across different fields. The goal is to understand important ideas in AI more deeply by learning and thinking across disciplines.
Leadership:
Jaeseon Ha, a Kellogg MBA + AI student, will lead the reading group during the Fall 2026 term. Please contact Jaeseon with any questions or reach out to us at nico@northwestern.edu.
Meeting Times:
Date: Biweekly on Wednesday evening, starting on September 23, 2026
Time: 6-7pm
Location: NICO main office, Chambers Hall,
600 Foster St, Evanston, IL 60208
Time
Wednesday, September 23, 2026 at 6:00 PM - 7:00 PM
Location
Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
WED@NICO Seminar Series returns on September 30, 2026
Northwestern Institute on Complex Systems (NICO)
12:00 PM
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Lower Level, Chambers Hall
Details
The Wednesdays@NICO seminar series returns September 30, 2026, running through November 11, 2026, with the following speakers.
9/30/2026 - Luis Amaral, Northwestern University
10/7/2026 - Kristina Lerman, Indiana University
10/14/2026 - Tim Tangherlini, University of California, Berkeley
10/21/2026 - Andreia Sofia Teixeira, Northeastern University London
10/28/2026 - Rafael Prieto-Curiel, Complexity Science Hub, Vienna
11/4/2026 - Hamsa Bastani, University of Pennsylvania
11/11/2026 - Mayank Agrawal, Proof of Human
We will share detailed speaker information, talk titles and abstracts, in the coming weeks.
Location:
In person: Chambers Hall, 600 Foster Street, Lower Level
Remote option TBA
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems, networks, and artificial intelligence. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between. Please visit: https://bit.ly/WedatNICO for information on future speakers.
Time
Wednesday, September 30, 2026 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)