Santa Fe Institute
Is Free Will an Illusion? What Can Cognitive Science Tell Us?
updated
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
David Krakauer, SFI
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
Guests: Heather Graham, Research Associate at NASA Goddard Space Flight Center
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music by: Mitch Mignano
Additional sound credits: Digifish music; “Determination of Azimuth,” written by Heather Graham, staged at the Baltimore Rock Opera Society
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
More info:
Apply for the 2024 Complexity Global School at Universidad de los Andes in Bogotá, Colombia: https://www.santafe.edu/info/2024-complexity-global-school/overview
SFI programs: Education
Complexity Explorer: Origins of Life: Introduction| Chris Kempes (Link to full playlist)
Enroll for the course: Origins of Life
Videos:
Asteroids, Agnostic Biosignatures, & Experimental Rock Opera with Dr. Heather Graham
Heather Graham on Katherine Johnson
Papers & Articles:
“Investigating the impact of x‐ray computed tomography imaging on soluble organic matter in the Murchison meteorite: Implications for Bennu sample analyses” in Meteoritics & Planetary Science (December 2023), doi.org/10.1111/maps.14111
“The Vacant Niche Revisited: Using Negative Results to Refine the Limits of Habitability,” in bioRxiv (Nov 8, 2023), doi.org/10.1101/2023.11.06.565904
“Observations of Elemental Composition of Enceladus Consistent with Generalized Models of Theoretical Ecosystems,” in bioRxiv (Oct 29, 2023), doi.org/10.1101/2023.10.29.564608
“Planetary Subsurface Science and Exploration: An Integrated Consortium to Understand Subsurface Sources of Energy and the Unique Energetics of Subsurface Life,” in Mars Extant Life: What’s Next? (Nov 2019), hou.usra.edu/meetings/lifeonmars2019/pdf/5047.pdf
“Detecting life on Earth and the limits of analogy,” in Planetary Astrobiology (June 16, 2020)
“Identifying molecules as biosignatures with assembly theory and mass spectrometry,” in chemRxiv (Nov 16, 202), chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/60c751e59abda27c1af8dce4/original/identifying-molecules-as-biosignatures-with-assembly-theory-and-mass-spectrometry.pdf
“The Grayness of the Origin of Life,” in Life (May 29, 2021) doi.org/10.3390/life11060498
“Generalized stoichiometry and biogeochemistry for astrobiological applications,” in Bulletin of Mathematical Biology (July 2021), link.springer.com/article/10.1007/s11538-021-00877-5
Francis Spufford, Author
When Francis Spufford wrote Red Plenty, his celebrated novel about Soviet economic planning, he couldn't have anticipated the reaction. Some saw it as a parable of the problems of capitalism after the financial crisis, others as an elegant demonstration in fictional form that capitalism never had any real alternative. Still others read it as a license to revive the dream of the planned economy. Were the vast economic apparatuses of Amazon and Walmart actually a blueprint for how to do socialism at scale? Now, as Silicon Valley tries to rebuild the economy around optimizing algorithms and AGI, old debates over markets and planning are opening up again. In this conversation, Henry Farrell interviews Spufford about the old dream of socialist optimization and the new debates that have arisen since. Francis Spufford will be signing copies of Red Plenty, and his most recently published novel, Cahokia Jazz, in the Lensic lobby starting at 6:30 pm. David Krakauer will introduce this first event of SFI's 2024 Community Lecture Series. Henry Farrell is SNF Agora Institute Professor at Johns Hopkins School of Advanced International Studies, and 2019 winner of the Friedrich Schiedel Prize for Politics and Technology. He works on a variety of topics, including democracy, the politics of the Internet and international and comparative political economy. He has written articles and book chapters as well as three books, The Political Economy of Trust: Interests, Institutions and Inter-Firm Cooperation, published by Cambridge University Press, and (with Abraham Newman) Of Privacy and Power: The Transatlantic Fight over Freedom and Security, published by Princeton University Press, and Underground Empire: How America Weaponized the World Economy (with Abraham Newman), forthcoming from Henry Holt (US) and Penguin (UK). Francis Spufford FRSL (born 1964) is an English author and teacher of writing whose career has seen him shift gradually from non-fiction to fiction. His first novel Golden Hill received critical acclaim and numerous prizes including the Costa Book Award for a first novel, the Desmond Elliott Prize and the Ondaatje Prize. In 2007 he was elected a Fellow of the Royal Society of Literature.
Learn more, follow us on social media and check out our podcasts: https://linktr.ee/sfiscience
Mutualism and competition are simultaneously at play at many levels of organization in ecosystems, from pairs of individuals within a species, to much higher levels of organization such as between plants and soil microorganisms. Quite generally, this implies tradeoffs and the existence of optimal resource allocations. The carbon and nitrogen cycles in plant-microbe communities provide a classic example in which that optimization can be explored with relatively well-validated models. These yield an optimal outcome for nitrogen allocation between microbes and plants, and this theoretical outcome appears, empirically, to be where nature sits. How might this have evolved? Kin selection is inapplicable, and more generally, from a selfish gene perspective this outcome is impossible. I show, however, that group selection in a patchy environment provides an evolutionary mechanism for attaining this seemingly (but not really) altruistic outcome. Mutualism and competition are ubiquitous in human society, so what are the societal implications of these findings? I discuss some examples and sketch an agenda for further analysis.
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
Guests:
David Krakauer, President and William H. Miller Professor of Complex Systems at the Santa Fe Institute
Sean Carroll, External Professor and Fractal Faculty at the Santa Fe Institute, Homewood Professor of Natural Philosophy at Johns Hopkins University
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music by: Mitch Mignano
Additional sound credits: Digifishmusic, Trundlefly, Greenvwbeetle, Miksmusic, Brewlabboffin
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
SFI programs: Education
Complexity Explorer:
Origins of Life: The Multiple Origins of Life - Part 1 | David Krakauer
Origins of Life: The Multiple Origins of Life - Part 2 | David Krakauer
Origins of Life: The Multiple Origins of Life - Part 3 | David Krakauer
Origins of Life: The Multiple Origins of Life - Part 4 | David Krakauer
Complexity Explorer Lecture: David Krakauer • What is Complexity?
Books:
Disputed Inheritance: The Battle over Mendel and the Future of Biology by Gregory Radick
Quanta and Fields: The Biggest Ideas in the Universe by Sean Carroll
Worlds Hidden in Plain Sight: The Evolving Idea of Complexity at the Santa Fe Institute, 1984-2019 Edited by David Krakauer
Talks:
The Many Worlds of Quantum Mechanics Sean Carroll
Papers & Articles:
“The Multiple Paths to Multiple Life,” in Journal of Molecular Evolution (July 12, 2021), doi.org/10.1007/s00239-021-10016-2
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
One might wonder what economic concepts like arbitrage and the invisible hand are doing in the dynamics of biological and ecological systems. As it turns out, plenty!
The physics of active matter, such as ant colonies and bird flocks, exhibiting interesting self-organizing dynamical behavior has gained considerable importance in recent years. Recent theoretical advances use techniques from hydrodynamics, kinetic theory, and non-equilibrium statistical physics. However, for biological agents, these don t seem to recognize explicitly their critical feature, namely, the role of survival-driven purpose and the attendant pursuit of maximum utility.
In this talk, I will present a novel game-theoretic framework, called statistical teleodynamics, that accounts for this feature explicitly and shows how it can be integrated with conventional statistical mechanics to develop a unified theory of arbitrage equilibrium in active matter.
The theory proposes a spectrum of self-actualizing capabilities, going from none to completely strategic decision-making, and envisions the various examples of active matter systems occupying someplace in this spectrum. I will show how statistical teleodynamics reduces to familiar results in statistical mechanics in the limit of zero self-actualization. At the other extreme, in an economic setting, it provides novel insights into the emergence of income distributions and their fairness in an ideal free-market society. As examples of agents in between these limits, I will discuss how the theory predicts pattern formation in mussel beds, the emergence of ant craters, and the flocking of birds.
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
Guests:
Melanie Moses, External Professor at the Santa Fe Institute, Professor of Computer Science and Associate Professor of Biology at University of New Mexico
Hyejin Youn, External Professor at the Santa Fe Institute, Associate Professor at Institute of Northwestern University
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music by: Mitch Mignano
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
More info:
SFI programs: Education
Complexity Explorer:
Fractals and Scaling
Fractals and Scaling: Toward a Theory of Urban Scaling
Introduction to Complexity: Ant Foraging and Task Allocation
Books:
Scale by Geoffrey West
Complexity: a Guided Tour by Melanie Mitchell
Talks:
Toward a Scientific Theory of Cities by Hyejin Youn
Papers & Articles:
“Synergy in ant foraging strategies: memory and communication alone and in combination,” in GECCO’13: Proceedings of the 15th annual conference on Genetic and evolutionary computation (July 6, 2013), doi.org/10.1145/2463372.2463389
“In vivo, in silico, in machina: Ants and Robots balance memory and communication to collectively exploit information,” in Proceedings of the European Conference on Complex Systems 2012
“What makes individual I’s a Collective We; coordination mechanisms & costs” in arXiv (November 20, 2023), doi.org/10.48550/arXiv.2306.02113
“How does innovation push its boundaries?” in 43 Visions for Complexity, Exploring Complexity: Volume 3 (January 2017), doi.org/10.1142/9789813206854_0043
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
Guests:
Brian Enquist, External Professor at the Santa Fe Institute, Professor of Ecology and Evolutionary Biology at University of Arizona
Pablo Marquet, External Professor at the Santa Fe Institute, Professor at Institute of Ecology and Biodiversity, Pontificia Universidad Católica de Chile
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music by: Mitch Mignano
Other music: Craig Smith, Justkiddink, MaestroALF, ComputerHotline, James Ro Davidson, SoundEnsemble, Trundlefly, Geoff Bremner, Newagesgroup, Oddmonoliths, Thepla
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
More info:
SFI programs:
Education
Complexity Explorer: Origins of Life: Astrobiology & General Theories for Life - Scaling with Pablo Marquet
Books:
Scale by Geoffrey West
Scaling Biodiversity (Ecological Reviews) edited by David Storch, Pablo Marquet , James Brown
How Landscapes Change: Human Disturbance and Ecosystem Fragmentation in the Americas (Ecological Studies Book 162) edited by Gay A. Bradshaw and Pablo A. Marquet
Talks:
Better Forecasting our Ecological Future: Taming Big Data with Big Theory, Brian Enquist
Papers & Articles:
“More than 17,000 tree species are at risk from rapid global change,” in Nature Communications (January 2, 2024), doi.org/10.1038/s41467-023-44321-9
“Metastatic cells exploit their stoichiometric niche in the network of cancer ecosystems,” in Science Advances (December 13, 2023), doi: 10.1126/sciadv.adi79
“Environmental heterogeneity as a driver of terrestrial biodiversity on a global scale” in PPG: Earth and Environment (August 11, 2023), doi.org/10.1177/03091333231189045
“The number of tree species on Earth,” PNAS (Jan 31, 2022), doi.org/10.1073/pnas.2115329119
“Globally important plant functional traits for coping with climate change,” in Frontiers of Biogeography (October 2, 2021), doi.org/10.21425/F5FBG53774
“Scaling from Traits to Ecosystems: Developing a General Trait Driver Theory via Integrating Trait-Based and Metabolic Scaling Theories,” Advances in Ecological
Research (May 4, 2015), doi.org/10.1016/bs.aecr.2015.02.001
“A general quantitative theory of forest structure and dynamics,” PNAS (April 28, 2009), doi.org/10.1073/pnas.0812294106
https://linktr.ee/sfiscience
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
https://linktr.ee/sfiscience
Guests:
— Ricard Solé, External Professor at the Santa Fe Institute, Head of the Complex Systems Lab at Universitat Pompeu Fabra
— Sara Walker, External Professor at the Santa Fe Institute, Associate Director of the ASU-SFI Center for Biosocial Complex Systems
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music by: Mitch Mignano
Other music: Matucha, Kijjaz, Klankbeeld, Aesterial-Arts, Dijifishmusic, Greenvwbeetle, Odilon Marcenaro, Jobro, Benboncan, Bone666138, Aiwha, Josh Berry, Rubenvvuuren, and Miksmusic
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
SFI programs:
Complexity Explorer: Origins of Life
Education
Books & Films:
Frankenstein, directed by James Whale, based on book by Mary Shelley
The Computer and the Brain, by John von Neumann
Signs of life: How complexity pervades biology by Ricard V. Solé and Brian C. Goodwin
Talks:
Liquid and Solid Brains: Mapping the Cognition Space by Ricard Solé
Evolving Brains: Solid, Liquid and Synthetic by Ricard Solé
A Universal Theory of Life: Math, Art & Information by Sara Walker
Papers & Articles:
“Assembly theory explains and quantifies selection and evolution” in Nature (October 4, 2023) doi.org/10.1038/s41586-023-06600-9
“Time is an object” in Aeon, May 19, 2023
“The Algorithmic Origins of Life” in Journal of the Royal Society Interface (February 6, 2013) doi.org/10.1098/rsif.2012.0869
“Evolution of Brains and Computers: The Roads Not Taken” in Entropy (May 9, 2022), doi.org/10.3390/e24050665
“Unicellular–multicellular evolutionary branching driven by resource limitations” (June 2, 2022) doi.org/10.1098/rsif.2022.0018
Motivated by the study of complex social behavior, we introduce a nonlinear dynamic model of belief formation dynamics. According to our model, belief updates of individuals are informed by the complex interplay of external factors, i.e. social network effects, and internal factors, i.e. internal biases, networked relationships between an individual's belief representations, and nonlinear processing of social information. We rigorously show how groups overcome deadlock to form strong beliefs when it is urgent to do so, how the structure of social relationships and of the underlying belief system shapes social decisions in the group, and how group-level beliefs can be highly sensitive to the personal biases of a small number of individuals. This work provides novel insights into the dynamics of complex social systems in nature and society and motivates a new approach for the design of distributed behavior in engineered networks of social agents.
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
Guests:
Vijay Balasubramanian, External Professor at the Santa Fe Institute, Cathy and Marc Lasry Professor of Physics at the University of Pennsylvania
Geoffrey West, Shannan Distinguished Professor and Past President, Santa Fe Institute
Hosts: Abha Eli Phoboo & Chris Kempes
Producer: Katherine Moncure
Podcast theme music: Mitch Mignano
Other Music: Blue Dot Sessions, Pink House Music, Eardeer, and Craig Smith.
You can listen to us on Simplecast - Spotify, Apple, Google Podcast, Pocketcast, Overcast and Youtube.
Follow us on:
Twitter • YouTube • Facebook • Instagram • LinkedIn • Bluesky
SFI programs:
Complexity Global School
Complexity Explorer: Fractals & Scaling
Education
Books & Stories:
Tell Me Why by Arkady Leokum
Scale by Geoffrey West
“Funes, the Memorious” by Jorge Luis Borges
Talks:
How the Brain Makes You: Collective Intelligence and Computation by Neural Circuits by Vijay Balasubramanian
The Future of the Planet: Life, Growth and Death in Organisms, Cities and Companies by Geoffrey West
Energy, Scaling & The Future of Life on Earth by Geoffrey West
Complex Time Working Group: “What is Sleep?” with Geoffrey West, Van Savage, Alex Herman
Papers:
“Brain Power” in PNAS (August 2, 2021) doi.org/10.1073/pnas.210702211
“The Physical Effects of Learning” preprint published in biorxiv
“Unraveling why we sleep: Quantitative analysis reveals abrupt transition from neural reorganization to repair in early development” in Science Advances (September 18, 2020) DOI: 10.1126/sciadv.aba0398
“The Scales That Limit: The Physical Boundaries of Evolution” in Frontiers in Ecology and Evolution (August 7, 2019) doi.org/10.3389/fevo.2019.00242
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
Are there universal laws of life and can we find them? Is there a physics of society, of ecology, of evolution? Join us for thought-provoking insights on the physics of life and its profound implications on our understanding of the universe. In this first season of the Santa Fe Institute’s Complexity podcast’s relaunch, we talk to researchers who have been exploring these questions and more through the lens of complexity science. The first of six episodes launches on January 31. Subscribe now and be part of the exploration!
Learn more, follow us on social media and check out our other podcasts:
https://linktr.ee/sfiscience
The Cambrian Explosion, 540-520 million years ago marks the appearance and rise of animals on Earth. During this time we saw the rapid emergence of all major modern groups, modern-style food webs, as well as a substantial rise of animal abundance and biodiversity. This talk will be explore the processes that may have driven this revolutionary event. Were both internal (genetic) or external (physicochemical) processes important? This radiation took place on a totally different Earth with many continental land masses clustering around the tropics, no polar ice caps, and much lower atmospheric oxygen levels compared to today. Life had not colonised land and the modern carbon cycle was yet to form. While we are starting to understand how new forms of developmental gene regulatory networks, pulses of oxygenation, and ecological feedbacks played key roles, unpicking the drivers of the Cambrian Explosion remain a profound puzzle in the history of life.
Learn more, follow us on social media and check out our podcasts:
https://linktr.ee/sfiscience
The U.S. government is currently focused on creating a new process for siting nuclear waste repositories, called "consent-based siting" (CBS). However, nuclear waste from both commercial and military applications continues to stymie any policies meant to address radioactive materials. This discussion will touch on the nuclear past, present, and (far) futures of nuclear waste policy in the U.S., using environmental and intergenerational justice as a focal point for engaging myriad publics, from scientists and engineers to the communities who may host nuclear waste facilities, as well as those in the future who will be tasked with safeguarding these materials for thousands of years. While CBS presents a novel approach for the U.S., critical questions remain regarding addressing past injustices, as well as future governance processes for all nuclear projects.
Learn more at https://santafe.edu
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Sisyphus has been punished by the Olympian deities to repeatedly push a boulder up a mountain, day in and day out. Albert Camus encourages us to envision Sisyphus from an existential angle (Le Mythe de Sisyphe, 1942). A universe that lacks the interference of Gods is not sterile or pointless. In a world lacking external references, life must propel itself: each atom, mineral, all nucleic acids, proteins, and every breath is imbued with night and day. The value of rolling the stone must lie in every step, every turn, and every gasp.
My artwork does not aim to instruct or educate; it neither presents itself as abstract or figurative. It prioritises sensation over perception, emphasising the qualities of experience over objects. In our secular era, life may appear devoid of meaning, with humans striving to impose order on existence and seeking answers to unanswerable questions without success.
If knowledge could be anticipated, science would be unnecessary. Notably, research is a perpetual amalgamation of imagination and perception, with no prospect of reaching certitude. Each of my drawings and paintings is a renewed effort to extend oneself, to differentiate novel qualities. To rebel against conformity, to persist without fate to disrupt the cycle, any cycle.
There is always more to do, earlier interpretations to be challenged by fresh ways of seeing, sensing and observing, where the world remains logically flat, irrespective of how high we climb Mount Sisyphus no matter how far we explore, think, experiment or search.
My art aims to show that we are in a blessed state in a world without foundations. I hope to enchant my audience through the eye, one of our astonishing senses, and convey the complexity of existence.
Learn more at https://santafe.edu
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
The origin of multicellular animals from a unicellular protozoan ancestor was a pivotal transition in life s history. Choanoflagellate protozoans share a common ancestor with sponges (primitive animals). We are using choanoflagellates that can be unicellular and can form multicellular colonies of various configurations as model systems to study functional consequences of being multicellular vs. unicellular so that we can gain insights about selective factors that might have affected the evolution of multicellularity. Before we began our work, it was assumed that forming multicellular colonies permitted the ancestors of animals to escape in size from capture by the unicellular predators that existed before the origin of animals.
Each choanoflagellate cell propels water by beating a single flagellum and captures bacterial prey on a collar of microvilli around the flagellum. Choanoflagellates can be free-swimming or attached to surfaces, and colonies can be chains, spheres with the flagella pointing outwards, or cups with the flagella lining the interior (like the flagellated chambers of sponges). We have used high-speed microvideography and mathematical modeling to study the water flow produced by solitary cells and by colonies of different designs and sizes, and to investigate how such flow affects their ability to swim, catch bacterial prey, and avoid being eaten by different types of protozoan predators similar to those faced by the ancestors of animals: raptors, suspension feeders, and passive predators. We have discovered a trade-off between feeding and swimming performance. We also found that the choanoflagellate forms that produce strong feeding currents are more likely to be sensed and captured by raptorial predators, and that increasing colony size is an effective predator deterrent only against some types of ciliate suspension feeders. Thus, if the common ancestor of choanoflagellates and animals had the ability shown by choanoflagellates to switch between being unicellular and multicellular, and to alter colony size and configuration in response to variable aquatic environments, that ability to change form (rather than simply becoming multicellular) might have provided a selective advantage to our ancestor.
Learn more at https://santafe.edu
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Donald Martin, Jr., Google Research
The application of machine learning (ML) and artificial intelligence (AI) in high-stakes domains, such as healthcare, presents both opportunities and risks. One significant risk is the epistemic uncertainty of ML/AI developers, who often lack sufficient contextual knowledge about the complex problems they aim to address and the socio-technical environments in which their interventions will be implemented. Conversely, individuals from civil society who are most affected by these issues and are most vulnerable to the harms that AI systems can cause possess deep, qualitative contextual knowledge that is often overlooked and difficult to incorporate into product development workflows.
Learn more at https://santafe.edu
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org
Follow us on social media:
twitter.com/sfiscience
instagram.com/sfiscience
facebook.com/santafeinstitute
facebook.com/groups/santafeinstitute
linkedin.com/company/santafeinstitute
Subscribe to SFI's official podcasts:
complexity.simplecast.com
aliencrashsite.org