110 | Neil Johnson on Complexity, Conflict, and Infodemiology

110 | Neil Johnson on Complexity, Conflict, and Infodemiology

Physicists have traditionally simplified systems as much as possible, in order to shed light on fundamental properties. But small, simple parts build up into large, complex wholes. Are there new rules and laws of nature that apply specifically to the realm of complexity? This has been a popular question for a few decades now, and we have some answers but not as many as we would like. Neil Johnson is an expert on complex systems generally, and information networks in particular. We discuss how self-organization can arise from individual units following their own agendas, and how we can mathematically characterize such behavior. Then we talk about information networks in the modern world, including how they have been used to spread disinformation and find recruits for radical fringe groups.

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Neil Johnson received his Ph.D. in physics from Harvard University. He is currently professor of physics at George Washington University, where he heads an initiative in Complexity and Data Science. In 1999 he presented the annual Christmas Lectures at the Royal Institution in London. He was the recipient of the Burton Award from the American Physical Society in 2018. Among his books are the textbook Financial Market Complexity and the trade book Simply Complexity.

Episoder(419)

26 | Ge Wang on Artful Design, Computers, and Music

26 | Ge Wang on Artful Design, Computers, and Music

Everywhere around us are things that serve functions. We live in houses, sit on chairs, drive in cars. But these things don't only serve functions, they also come in particular forms, which may be emo...

10 Des 20181h 10min

25 | David Chalmers on Consciousness, the Hard Problem, and Living in a Simulation

25 | David Chalmers on Consciousness, the Hard Problem, and Living in a Simulation

The "Easy Problems" of consciousness have to do with how the brain takes in information, thinks about it, and turns it into action. The "Hard Problem," on the other hand, is the task of explaining our...

3 Des 20181h 22min

24 | Kip Thorne on Gravitational Waves, Time Travel, and Interstellar

24 | Kip Thorne on Gravitational Waves, Time Travel, and Interstellar

I remember vividly hosting a colloquium speaker, about fifteen years ago, who talked about the LIGO gravitational-wave observatory, which had just started taking data. Comparing where they were to whe...

26 Nov 20181h 19min

23 | Lisa Aziz-Zadeh on Embodied Cognition, Mirror Neurons, and Empathy

23 | Lisa Aziz-Zadeh on Embodied Cognition, Mirror Neurons, and Empathy

Brains are important things; they're where thinking happens. Or are they? The theory of "embodied cognition" posits that it's better to think of thinking as something that takes place in the body as a...

19 Nov 20181h 7min

22 | Joe Walston on Conservation, Urbanization, and the Way We Live on Earth

22 | Joe Walston on Conservation, Urbanization, and the Way We Live on Earth

There's no question that human activity is causing enormous changes on our planet's environment, from deforestation to mass extinction to climate change. But perhaps there is a tiny cause for optimism...

12 Nov 20181h 28min

21 | Alex Rosenberg on Naturalism, History, and Theory of Mind

21 | Alex Rosenberg on Naturalism, History, and Theory of Mind

We humans love to tell ourselves stories about why things happened the way they did; if the stories are sufficiently serious, we label this activity "history." Part of getting history right is simply ...

5 Nov 20181h 20min

20 | Scott Derrickson on Cinema, Blockbusters, Horror, and Mystery

20 | Scott Derrickson on Cinema, Blockbusters, Horror, and Mystery

Special Halloween edition? Scott Derrickson is a film-lover first and a director second, but he's been quite successful at the latter -- you may know him as the director and co-writer of Marvel's Doct...

29 Okt 20181h 23min

19 | Tyler Cowen on Maximizing Growth and Thinking for the Future

19 | Tyler Cowen on Maximizing Growth and Thinking for the Future

Economics, like other sciences (social and otherwise), is about what the world does; but it's natural for economists to occasionally wander out into the question of what we should do as we live in the...

22 Okt 201859min

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