COMPLEXITY

The brain is arguably one of the most complex objects known to science. How best to understand it? That is a trick question: brains are organized at many levels and attempts to grasp them all through one approach — be it micro, macro, anatomical, behavioral — are destined to leave out crucial insights. What more, thinking “vertically” across scales, one might miss important angles from another dis...

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,...

What does it mean to be alive? Our origins are the horizon of our understanding, and as with the physical horizon, our approach brings us no closer. The more we learn, the more mysterious it all becomes. What if we’re asking the wrong questions? Maybe life did not begin at all, but rather coalesced piecemeal, a set of properties contingent and convergent, plural, more than once? Maybe the origin o...

One way to frame the science of complexity is as a revelation of the hidden order under seemingly separate phenomena — a teasing-out of music from the noise of history and nature. This effort follows centuries of work to find the rules that structure language, music, and society. How strictly analogous are the patterns governing a symphony and those that describe a social transformation? Math and...

As the old nut goes, “To the victor goes the spoils.” But if each round of play consolidates the spoils into fewer hands, eventually it comes to pass that wealthy special interests twist the rules so much it undermines the game itself. When economic power overtakes the processes of democratic governance, growth stagnates, and the rift between the rich and poor becomes abyssal. Desperate times and...

Chances are you’re listening to this on an advanced computer that fits in your pocket, but is really just one tentacle tip of a giant, planet-spanning architecture for the gathering and processing of data. A common sentiment among the smartphone-enabled human population is that we not only don’t own our data, but our data owns us — or, at least, the pressure of responsibility to keep providing dat...

Human beings are distinctly weird. We live for a very long time after we stop reproducing, move completely differently than all of our closest relatives, lack the power of chimpanzees and other primates but completely outdo most other terrestrial mammals in a contest of endurance. If we think about bodies as hypotheses about the stable features of their ancestral environments, what do the features...

Ask any martial artist: It’s not just where a person strikes you but your stance that matters. The amplitude and angle of a blow is one thing but how you can absorb and/or deflect it makes the difference. The same is true in any evolutionary system. Most people seem to know “the butterfly effect” where tiny changes lead to large results, but the inverse also works: complex organisms buffer their d...

What is life, and where does it come from? These are two of the deepest, most vexing, and persistent questions in science, and their enduring mystery and allure is complicated by the fact that scientists approach them from a myriad of different angles, hard to reconcile. Whatever else one might identify as universal features of all living systems, most scholars would agree life is a physical pheno...

Math and music share their mystery and magic. Three notes, played together, make a chord whose properties could not be predicted from those of the separate notes. In the West, music theory and mathematics have common origins and a rich history of shaping and informing one another’s field of inquiry. And, curiously, Western composition has evolved over several hundred years in much the same way eco...

We lead our lives largely unaware of the immense effort required to support them. All of us grew up inside the so-called “Grid” — actually one of many interconnected regional power grids that electrify our modern world. The physical infrastructure and the regulatory intricacies required to keep the lights on: both have grown organically, piecemeal, in complex networks that nobody seems to fully un...

As our world knits together, economic interdependencies change in both shape and nature. Supply chains, finance, labor, technological innovation, and geography interact in puzzling nonlinear ways. Can we step back far enough and see clearly enough to make sense of these interactions? Can we map the landscape of capability across scales? And what insights emerge by layering networks of people, firm...

In the digital era, data is practically the air we breathe. So why does everybody treat it like a product to be hoarded and sold at profit? How would our world change if Big Tech operated on assumptions and incentives more aligned with the needs of a healthy society? Are more data — or are bigger models — really better? As human beings scamper around like prehistoric mammals under the proverbial f...

The world is unfair — but how much of that unfairness is inevitable, and how much is just contingency? After centuries of efforts to arrive at formal theories of history, society, and economics, most of us still believe and act on what amounts to myth. Our predecessors can’t be faulted for their lack of data, but in 2022 we have superior resources we’re only starting to appreciate and use. In hono...

Context is king: whether in language, ecology, culture, history, economics, or chemistry. One of the core teachings of complexity science is that nothing exists in isolation — especially when it comes to systems in which learning, memory, or emergent behaviors play a part. Even though this (paradoxically) limits the universality of scientific claims, it also lets us draw analogies between the cont...

As fictional Santa Fe Institute chaos mathematician Ian Malcolm famously put it, “Life finds a way” — and this is perhaps nowhere better demonstrated than by roots: seeking out every opportunity, improving in their ability to access and harness nutrients as they’ve evolved over the last 400 million years. Roots also exemplify another maxim for living systems: “What doesn’t kill you makes you stron...

Autonomous vehicles hardly live up to their name. The goal of true “driverlessness” was originally hyped in the 1930s but keeps getting kicked further and further into the future as the true complexity of driving comes into ever-sharper and more daunting focus. In 2022, even the most capable robotic cars aren’t self-determining agents but linked into swarms and acting as the tips of a vast and hid...

Irrespective of your values, if you’re listening to this, you live in a pecking order. Dominance hierarchies, as they’re called by animal behaviorists, define the lives of social creatures. The society itself is a kind of individual that gathers information and adapts to its surroundings by encoding stable environmental features in the power relationships between its members. But what works for th...

As a careful study of the world, science is reflective and reactive — it constrains our flights of fancy, anchors us in hard-won fact. By contrast, science fiction is a speculative world-building exercise that guides imagination and foresight by marrying the known with the unknown. The field is vast; some sci-fi writers pay less tribute to the line between the possible and the impossible. Others,...

COVID has exposed and possibly amplified the polarization of society. What can we learn from taking a multiscale approach to crisis response? There are latencies in economies of scale, inequality of access and supply chain problems. The virus evolves faster than peer review. Science is politicized. But thinking across scales offers answers, insights, better questions… Welcome to COMPLEXITY , the o...

Some people say we’re all in the same boat; others say no, but we’re all in the same storm. Wherever you choose to focus the granularity of your inquiry, one thing is certain: we are all embedded in, acting on, and being acted upon by the same nested networks. Our fates are intertwined, but our destinies diverge like weather forecasts, hingeing on small variations in contingency: the circumstances...

If you’re honest with yourself, you’re likely asking of the last two years: What happened? The COVID-19 pandemic is a prism through which our stories and predictions have refracted…or perhaps it’s a kaleidoscope, through which we can infer relationships and causes, but the pieces all keep shifting. One way to think about humankind’s response to COVID is as a collision between predictive power and...

Democracy is a quintessential complex system: citizens’ decisions shape each other’s in nonlinear and often unpredictable ways; the emergent institutions exert top-down regulation on the individuals and orgs that live together in a polity; feedback loops and tipping points abound. And so perhaps it comes as no surprise in our times of turbulence and risk that democratic processes are under extraor...

What makes a satisfying explanation? Understanding and prediction are two different goals at odds with one another — think fundamental physics versus artificial neural networks — and even what defines a “simple” explanation varies from one person to another. Held in a kind of ecosystemic balance, these diverse approaches to seeking knowledge keep each other honest…but the use of one kind of knowle...

Where does cultural innovation come from? Histories often simplify the complex, shared work of creation into tales of Great Men and their visionary genius — but ideas have precedents, and moments, and it takes two different kinds of person to have and to hype them. The popularity of “influencers” past and present obscures the collaborative social processes by which ideas are born and spread. What...