Tim Booker

Complex systems scientist
University of Graz
Complex Social & Computational Systems
Computational social science,
alternative social media

tim.booker@uni-graz.at
Currently. Evolution of online discourse ; population-level belief structure ; ranking as selection pressure ; emergence of reasoning in language models.
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Beautiful order

Hi, I'm Tim. I'm a complex systems scientist with broad interests, but a thread that connects them all is cultural evolution, the process by which a culture accumulates design that nobody designed. Beliefs, habits and practices vary, people learn them from one another, some are learned more often than others, and over time the distribution in a population shifts toward the variants that fit their environment, which is mostly other people and what they already believe. Nobody has to intend any of it. Online, a large share of what people learn from one another now passes through ranking functions, which are selectors somebody wrote down, with an objective. My questions are what those selectors, and the newsrooms beside them, are selecting for, and what they ought to select for. I measure the first in the quality of political discourse, in how news frames the victims of conflict, and in how a population's beliefs hold together. The second is a question for democratic theory.

Research.
Cultural evolution, online and in populations of language models.
Freelance.
I take on contract work: measurement design, LLM labelling at scale, recommender and ranking audits, and data engineering on large or messy sources.
Media.
I'm happy to hear from journalists. That might be a hand with something computational, or a comment on a story about platforms, recommendation, and online discourse.
Students.
I supervise masters students, and BSc students who are motivated. You don't need a project worked out first. Write to me and tell me what interests you.
Elsewhere.
Bluesky. GitHub.
Write to me.
tim.booker@uni-graz.at. Anyone can write to me, about anything.