When you hear the word “nature,” what comes to mind? Chances are, if you are listening to this in the 21st Century, the image is one of a vast, interconnected, living network — one in which you and your fellow human beings play a complicated part. And yet, this is a relatively recent way of thinking for the modern West. It takes a special kind of thinker — and a special kind of life — to find and recognize the patterns that connect different environments around the planet. Until the pioneering r...
May 21, 2021•51 min•Season 1Ep. 60
Complexity is all around us: in the paths we walk through pathless woods, the strategies we use to park our cars, the dynamics of an elevator as it cycles up and down a building. Zoom out far enough and the phenomena of everyday existence start revealing hidden links, suggesting underlying universal patterns. At great theoretic heights, it all yields to statistical analysis: winning streaks and traffic jams, card games and elevators. Boiling down complicated real-world situations into elegant to...
May 07, 2021•58 min•Season 1Ep. 59
“More than the sum of its parts” is practically the slogan of systems thinking. One canonical example is a beehive: individually, a honeybee is not that clever, but together they can function like shapeshifting metamaterials or mesh networks — some of humankind’s most sophisticated innovations. Emergent collective behavior is common in the insect world — and not just among superstar collaborators like bees, ants, and termites. One firefly, alone, blinks randomly; together, fireflies effect an aw...
Apr 23, 2021•1 hr 1 min•Season 1Ep. 58
Human relationships are often described in the language of “chemistry” — does that make the beliefs and attitudes of individuals a kind of “physics”? It is, at least, a fascinating avenue of inquiry. In particular, the field of statistical mechanics offers potent tools for understanding how exactly people form their views and change their minds. From this perspective, everyone is a dynamic network of opinions and values, in a tense and ever-changing balance both with others and ourselves. The “c...
Apr 08, 2021•48 min•Season 1Ep. 57
Once upon a time at UC Santa Cruz , a group of renegade grad students started mixing physics with math and computers, determined to discover underlying patterns in the seeming-randomness of systems like the weather and roulette. Their research led to major insights in the emerging field of chaos theory, and eventually to the new discipline of complexity economics — which brings models from ecology and physics, cognitive science and biology together to improve our understanding of how value flows...
Mar 26, 2021•1 hr 4 min•Season 1Ep. 56
In the 21st Century, science is a team sport played by humans and computers, both. Social science in particular is in the midst of a transition from the qualitative study of small groups of people to the quantitative and computer-aided study of enormous data sets created by the interactions of machines and people. In this new ecology, wanting AI to act human makes no sense, but growing “alien” intelligences offers useful difference — and human beings find ourselves empowered to identify new ques...
Mar 12, 2021•1 hr•Season 1Ep. 55
Art history is a lot like archaeology — we here in the present day get artifacts and records, but the gaps between them are enormous, and the questions that they beg loom large. Historians need to be able to investigate and interpret, to unpack the meanings and the methods of a given work of art — but even for the best, the act of reconstruction is a trying test. Can we program computers to decipher the backstory of a painting — analyzing light and shadow to guess at how a piece was made? And, e...
Feb 26, 2021•1 hr•Season 1Ep. 54
The consequence of living in a complex world: one tiny tweak can lead to massive transformation. Set the stage a slightly different way, and the entire play might unfold differently. This path-dependency shows up in both the science fiction premise and the hypothesis of scientific research: What can we learn about the hidden order of our cosmos by adjusting just a single variable? Welcome to COMPLEXITY, the official podcast of the Santa Fe Institute . I’m your host, Michael Garfield , and every ...
Feb 12, 2021•50 min•Season 1Ep. 53
Most maps of the world render landscapes in 2D — yet wherever we observe ecosystems, they stratify into a third dimension. The same geometries that describe the dizzying diversity of species in the canopies of forests also govern life in other living systems, from the oceans to the linings of our mouths. Behind the many forms, a hidden order shapes how organisms live in and on each other — and this emerging discipline of “canopy biology” may yield important insights into modern urban life. Human...
Jan 29, 2021•1 hr 12 min•Season 1Ep. 52
It’s tempting to believe that people can outsource decisions to machines — that algorithms are objective, and it’s easier and fairer to dump the burden on them. But convenience conceals the complicated truth: when lives are made or broken by AI, we need transparency about the way we ask computers questions, and we need to understand what kinds of problems they’re not suited for. Sometimes we may be using the wrong models, and sometimes even great models fail when fed sparse or noisy data. Applyi...
Jan 15, 2021•1 hr 12 min•Season 1Ep. 51
COVID-19 hasn’t just disrupted the “normal” of everyone’s social practices in what we take for granted as “daily life.” The pandemic has also, more granularly, changed the way scientists research and publish; it has changed the way science interfaces with institutions as varied as local governments and cell phone companies; it has changed the way we host and produce this podcast. This episode, for instance, with SFI External Professor Sam Scarpino and Resident Professor Michael Lachmann was reco...
Dec 23, 2020•59 min•Season 1Ep. 50
Matter, energy, and information: the holy trinity of physics. Understanding the relations between these measures of our world are one of the big questions of complex systems science. The laws of thermodynamics tell us that entropy (loosely but somewhat inaccurately speaking, “disorder”) increases in any closed material system. But at the same time living systems constantly pump out entropy, thereby keeping themselves alive by harnessing flows of energy and information. We know that physical syst...
Dec 11, 2020•1 hr 2 min•Season 1Ep. 49
"There are decades where nothing happens; and there are weeks where decades happen.” – Vladimir Ilyich Lenin When human beings saw the first pictures of the Earth from space, the impact was transformative. New instruments for taking in new vistas, for understanding our relationships and contexts at a different scale, have in some ways defined the history of not just science but the evolution of intelligence. And now, thanks to the surfeit of textual data offered up by social media, researchers c...
Nov 26, 2020•2 hr 30 min•Season 1Ep. 48
The modern world has a way of distancing itself from everything that came before it…and yet the evidence from archaeology supports a different story. While industrial societies tend to praise markets and advanced technologies as the main drivers of the last few centuries of change, a careful study of civilizations as distinct as Ancient Rome, Peru, and Central Mexico reveals an underlying uniformity. Consistent patterns have played out in human settlements across millennia and continents, regard...
Nov 11, 2020•55 min•Season 1Ep. 47
Organisms aren’t the only products of the evolutionary process. Cultural products such as writing, art, and music also undergo change over time, subject to both the constraints of the physical environment and the psychologies of those who make them. In recent years, the study of cultural evolution has exploded with new insights — revelations into the dynamics of how culture is transmitted, how it mutates under different pressures, and why some forms are remarkably resilient and stable across tim...
Oct 29, 2020•1 hr 2 min•Season 1Ep. 46
On the one hand, we have math: a world of forms and patterns, a priori logic, timeless and consistent. On the other, we have physics: messy and embodied interactions, context-dependent and contingent on a changing world. And yet, many people get the two confused, including physicists and mathematicians. Where the two meet, and the nature of the boundary between them, is a matter of debate — one of the greatest puzzles known to science and philosophy — but some things can be said for sure about w...
Oct 14, 2020•52 min•Season 1Ep. 45
Whether you live in the USA or have just been watching the circus from afar, chances are that you agree: “polarization” dominates descriptions of the social landscape. Judging from the news alone, one might think the States have never been so painfully divided…yet nuanced public polls, and new behavioral models, suggest another narrative: the United States is largely moderate, and people have much more in common with each other than they think. There’s no denying our predicament: cognitive biase...
Sep 30, 2020•1 hr 10 min•Season 1Ep. 43
Now, maybe more than ever before, it is time to learn the art of skepticism. Amidst compounded complex crises, humankind must also navigate a swelling tidal wave of outright lies, clever misdirections, and well-meant but dangerous mistaken claims….in other words, bullshit. Why is the 21st Century such a hotbed of fake news? How can we structure our networks and their incentives to mitigate disinformation and encourage speaking truth to power? And whose responsibility is it to inform the public a...
Sep 16, 2020•59 min•Season 1Ep. 42
Is there life on Mars? Or Titan? What are we even looking for? Without a formal definition, inquiries into the stars just echo noise. But then, perhaps, the noise contains a signal… To find life elsewhere in the universe requires us to wager a defined biology, to come to terms with what it means to be alive. Looking out is looking in, to ask the hardest question ever: How do we find something we might not recognize as what we’re seeking? Welcome to COMPLEXITY, the official podcast of the Santa F...
Sep 02, 2020•57 min•Season 1Ep. 41
One of the defining characteristics of complex systems science is the shift in emphasis from objects to relationships and processes. How is information related to matter and energy, and how do the distinct formulations of different scientific lineages braid together in a unifying pattern? This search for a more fundamental understanding drives directly into some of the biggest questions science has to ask about the living world — namely, what is life, what is alive, and when did life begin? The ...
Aug 12, 2020•1 hr 7 min•Season 1Ep. 40
Since the 1940s, scientists have puzzled over a curious finding: armed conflict data reveals that human battles obey a power-law distribution, like avalanches and epidemics. Just like the fractal surfaces of mountains and cauliflowers, the shape of violence looks the same at any level of magnification. Beyond the particulars of why we fight, this pattern suggests a deep hidden order in the physical laws governing society. And, digging into new analyses of data from both armed conflicts and votin...
Jul 23, 2020•1 hr 3 min•Season 1Ep. 39
The magnitude of interlocking “wicked problems” we humans face today is daunting…and made all the worse by the widening schisms in our public discourse, the growing prominence of hate speech and prejudicial violence. How can we collaborate at scale if it’s not even safe to act as citizens, to participate in a sufficiently diverse society, without becoming targets? The World Wide Web has made it easier than ever for hate groups to organize…but also grants new power to those willing to oppose the ...
Jul 15, 2020•1 hr 6 min•Season 1Ep. 38
Each of us at some point in our lives will face traumatizing hardship — abuse or injury, lack or loss. And all of us must weather the planetwide effects of this pandemic, economic instability, systemic inequality, and social unrest…and find a way to live on with their consequences. Trauma isn’t evenly distributed. But it IS ubiquitous, and learning how to get on with our lives is one of our main tasks as human beings. From this hardship grows the best of us: our wisdom, compassion, creativity, a...
Jul 06, 2020•59 min•Season 1Ep. 37
Cities define the modern world. They characterize the human era and its impacts on our planet. By bringing us together, these "social reactors" amplify the best in us: our creativity, efficiency, wealth, and communal ethos. But they also amplify our worst: the incidence of social crimes, the span of inequality, our vulnerability to epidemics. And built into the physics of the city is an accelerating cycle of crisis and innovation that now drives our global economy and ecosystems closer to the ed...
Jun 25, 2020•58 min•Season 1Ep. 36
We’re living through a unique moment in history. The interlocking crises of a global pandemic, widespread unemployment, social unrest, and climate change, show us just how far human civilization has traveled along a path that leads to collapse. It is more crucial than ever to seek a deeper understanding of the systems that sustain us, and the thin layer of life on the surface of our planet. What are the underlying laws that govern how we live together and as individuals? How do our economies and...
Jun 17, 2020•50 min•Season 1Ep. 35
Mathematical models of the world — be they in physics, economics, epidemiology — capture only details that researchers notice and deem salient. Rather than objective claims about reality, they encode (and thus enact) our blind spots. And the externalities created by those models — microscopic pathogens invisible to the naked eye, or differences in the social network structures of two neighborhoods, or food webs disrupted by urban development — have a way of biting back when we ignore them. Struc...
Jun 08, 2020•40 min•Season 1Ep. 34
Humans, like any other organism, occupy a niche — a “Goldilocks Zone” for which our biology is suited, relatively to the extreme diversity of habitats on Earth. But to understand the natural habitat of human beings we would first have to perform a comprehensive survey of human settlements throughout history and prehistory, looking for patterns in the climate data. No one did this research until very recently, and what they found surprised them. Human life, especially the outdoor work like farmin...
Jun 02, 2020•57 min•Season 1Ep. 33
If COVID-19 has made anything obvious to everyone, it might be how the very small can force the transformation of the very large. Disrupt the right place in a network and exponential changes ripple outward: a virus causes a disease that leads to economic shocks and other social impacts that, in turn, re-open urban spaces to nonhuman animals and change the course of evolution. Adapting to these changes will require a different kind of understanding: one of nonlinear dynamics, feedback loops, exte...
May 11, 2020•47 min•Season 1Ep. 32
It takes effort to embrace complexity. Simple models, simple narratives seem easier up front, their consequences only obvious in retrospect. When we talk about COVID-19 transmission rates, we’re using averages that do not offer crucial insights into how those rates may vary. When we target complex ailments with silver-bullet pharmaceuticals, we don’t address the underlying systems-level problems. Radical uncertainty resists attempts at easy answers, forcing changes in the pace at which we take s...
May 04, 2020•45 min•Season 1Ep. 31
COVID-19 has delivered an extraordinary shock to our assumptions, be they in how we practice education, business, research, or governance. When we base forecasts on bad data, even solid logic gives us unreliable results. Centralized authority is good for organized coherent action but isn’t agile or fine-grained enough to deal with local variance and rapidly evolving novel challenges. Surveillance can save lives but also threatens privacy upon which a diverse society depends. A longer memory migh...
Apr 27, 2020•51 min•Season 1Ep. 30
