And now for something completely different!  Last October, The Santa Fe Institute held its third InterPlanetary Festival at SITE Santa Fe, celebrating the immensely long time horizon, deep scientific and philosophical questions, psychological challenges, and engineering problems involved in humankind’s Great Work to extend its understanding and presence into outer space. For our third edition, we turned our attention to visionary projects living generations will likely not live to see completed — interstellar travel, off-world cities, radical new ways of understanding spacetime — as an invitation to engage in science as not merely interesting but deeply fun. For our first panel, we decided to inquire: What is time, really? How has science fiction changed  the way we track and measure, speak about, and live in time? And how do physics and complex systems science pose and answer these most fundamental questions?Welcome to COMPLEXITY, the official podcast of the Santa Fe Institute. I’m your host, Michael Garfield, and every other week we’ll bring you with us for far-ranging conversations with our worldwide network of rigorous researchers developing new frameworks to explain the deepest mysteries of the universe.In this week’s episode, we share the Complex Conceptions of Time panel from InterPlanetary Festival 2022, moderated by SFI President David Krakauer and featuring an all-star trinity of panelists: science journalist James Gleick, sci-fi author and SFI Miller Scholar Ted Chiang, and physicist and SFI Professor David Wolpert. In this hour, we play with and dissect some favorite metaphors for time, unroll the history of time’s mathematization, review time travel in science fiction, and examine the arguments between free will and determinism.Be sure to check out our extensive show notes with links to all our references at complexity.simplecast.com — as well as the extensive, interactive web-based “Voyager Golden Record Liner Notes” with links to not only all of the panels from IPFest 2022 but also copious additional resources, including contributor bios, peer-reviewed publications, science fiction and nonfiction science writing, and more…If you value our research and communication efforts, please subscribe, rate and review us at Apple Podcasts or Spotify, and consider making a donation — or finding other ways to engage with us — at santafe.edu/engage.If you’d like some HD virtual backgrounds of the SFI campus to use on video calls and a chance to win a signed copy of one of our books from the SFI Press, help us improve our science communication by completing a survey about our various scicomm channels. Thanks for your time!Lastly, we have a bevy of summer programs coming up! Join us June 19-23 for Collective Intelligence: Foundations + Radical Ideas, a first-ever event open to both academics and professionals, with sessions on adaptive matter, animal groups, brains, AI, teams, and more.  Space is limited!  The application deadline has been extended to March 1st.OR apply to the Graduate Workshop on Complexity in Social Science.OR the Complexity GAINS UK program for PhD students.(OR check our open listings for a staff or research job!)Join our Facebook discussion group to meet like minds and talk about each episode.Podcast theme music by Mitch Mignano.Episode cover art by Michael Garfield with the help of Midjourney.Follow us on social media:Twitter • YouTube • Facebook • Instagram • LinkedIn(SOME) Mentioned & Related Links:David KrakauerMathematical languages shape our understanding of time in physicsby Nicolas GisinDoes Time Really Flow? New Clues Come From a Century-Old Approach to Mathby Natalie WolchoverThe Principle of Least ActionPath Integral FormulationClosed Timelike CurveThe Time Machineby H. G. WellsKip ThorneJames GleickGenius: The Life and Science of Richard FeynmanThe Physicist and The Philosopherby Jimena CanalesTed Chiang“Story of Your Life”ArrivalExhalationRussian Doll (TV series)“The Merchant and the Alchemist's Gate”David WolpertComplexity 94 - David Wolpert & Farita Tasnim on The Thermodynamics of CommunicationComplexity 45 - David Wolpert on The No Free Lunch Theorems and Why They Undermine The Scientific MethodA Connecticut Yankee in King Arthur’s Court by Mark TwainIntuitionist Mathematics

Communication is a physical process. It’s common sense that sending and receiving intelligible messages takes work…but how much work? The question of the relationship between energy, information, and matter is one of the deepest known to science. There appear to be limits to the rate at which communication between two systems can happen…but the search for a fundamental relationship between speed, error, and energy (among other things) promises insights far deeper than merely whether we can keep making faster internet devices. Strap in (and consider slowing down) for a broad and deep discussion on the bounds within which our entire universe must play…Welcome to COMPLEXITY, the official podcast of the Santa Fe Institute. I’m your host, Michael Garfield, and every other week we’ll bring you with us for far-ranging conversations with our worldwide network of rigorous researchers developing new frameworks to explain the deepest mysteries of the universe.This week we speak with SFI Professor David Wolpert and MIT Physics PhD student Farita Tasnim, who have worked together over the last year on pioneering research into the nonlinear dynamics of communication channels. In this episode, we explore the history and ongoing evolution of information theory and coding theory, what the field of stochastic thermodynamics has to do with limits to human knowledge, and the role of noise in collective intelligence.Be sure to check out our extensive show notes with links to all our references at complexity.simplecast.com. If you value our research and communication efforts, please subscribe, rate and review us at Apple Podcasts or Spotify, and consider making a donation — or finding other ways to engage with us, including a handful of open postdoctoral fellowships — at santafe.edu/engage.Lastly, this weekend — October 22nd & 23rd — is the return of our InterPlanetary Festival! Join our YouTube livestream for two full days of panel discussions, keynotes, and bleeding edge multimedia performances focusing   space exploration through the lens of complex systems science. The fun begins at 11 A.M. Mountain Time on Saturday and ends 6 P.M. Mountain Time on Sunday. Everything will be recorded and archived at the stream link in case you can’t tune in for the live event. Learn more at interplanetaryfest.org…Thank you for listening!Join our Facebook discussion group to meet like minds and talk about each episode.Podcast theme music by Mitch Mignano.Follow us on social media:Twitter • YouTube • Facebook • Instagram • LinkedInReferenced in this episode:Nonlinear thermodynamics of communication channelsby Farita Tasnim and David Wolpert (forthcoming at arXiv.org)Heterogeneity and Efficiency in the Brainby Vijay BalasubramanianNoisy Deductive Reasoning: How Humans Construct Math, and How Math Constructs Universesby David Wolpert & David KinneyStochastic Mathematical Systemsby David Wolpert & David KinneyTwenty-five years of nanoscale thermodynamicsby Chase P. Broedersz & Pierre RoncerayTen Questions about The Hard Limits of Human Intelligenceby David WolpertWhat can we know about that which we cannot even imagine?by David WolpertCommunication consumes 35 times more energy than computation in the human cortex, but both costs are needed to predict synapse numberby William Levy & Victoria CalvertAn exchange of letters on the role of noise in collective intelligenceby Daniel Kahneman, David Krakauer, Olivier Sibony, Cass Sunstein, David WolpertWhen Slower Is Fasterby Carlos Gershenson & Dirk HelbingAdditional Resources:The stochastic thermodynamics of computationby David WolpertElements of Information Theory, Second Edition (textbook)by Thomas Cover & Joy ThomasComputational Complexity: A Modern Approach (textbook)by Sanjeev Arora & Boaz BarakAn Introduction to Kolmogorov Complexity and Its Applications (textbook)by Ming Li & Paul Vitányi

Top intellectuals discuss the concept of free will and its implications. Topics include the relationship between actions and the world, emergence of individualization in embryos, illusion of free will in cognitive neuroscience, relativity of existence, indeterminacy in classical mechanics, interpretations of quantum mechanics, and the ontological underpinnings of materialistic perspectives.

Complexity scientist David Wolpert discusses the thermodynamics of meaning, highlighting how information can have causal power to influence the well-being of systems. They explore the concept of semantic information across the complexity stack, from whirlpools to humans, emphasizing the evolution of meaningful information and the interplay between intelligence, behavior, and ethics.

David Wolpert, a Professor at the Santa Fe Institute, discusses how humans construct math, the reality of mathematics, inference devices, the limits of consciousness, and the role of math in science. He explores the concept of time, the limits of human intelligence, and the importance of math in understanding one's thoughts.