Reality is just out there — but how we perceive reality and talk about it depends on choices we human beings make. We decide (consciously or not) to conceptualize the world in certain ways, whether it’s because those ways provide elegant predictive descriptions or because they serve a more subtle political purpose. To get at the true nature of reality, therefore, it’s important to think about which aspects of it are socially constructed, and why. I talk with Sally Haslanger about these issues, a...
Jan 31, 2022•1 hr 38 min•Ep. 182
A good story takes you on an emotional journey, with ups and downs along the way. Thanks to science, we can quantify that. Peter Dodds works on understanding the structure of stories and other strings of words (including Twitter) by analyzing the valence of individual words, then studying how they are strung together in different kinds of stories. Understanding these structures offers powerful insight into how people communicate and how to reach them. As Peter says, “Never bring statistics to a ...
Jan 24, 2022•1 hr 17 min•Ep. 181
Being a human is tricky. There are any number of unwritten rules and social cues that we have to learn as we go, but that we ultimately learn to take for granted. Camilla Pang, who was diagnosed with autism spectrum disorder at age eight, had a harder time than most, as she didn’t easily perceive the rules of etiquette and relationships that we need to deal with each other. But she ultimately figured them out, with the help of analogies and examples from different fields of science. We talk abou...
Jan 17, 2022•1 hr 4 min•Ep. 180
Human beings like to divide themselves into groups, and then cooperate, socialize, and reproduce with members of their own group. But they’re not very absolutist about it; groups tend to gradually (or suddenly) intermingle, as people explore, intermarry, or conquer each other. David Reich has pioneered the use of genetic data in uncovering the history of ancient humanity: what groups existed where and when, and how they interacted. The result is a picture of churning populations in constant flux...
Jan 10, 2022•1 hr 13 min•Ep. 179
Are numbers real? What does that even mean? You can’t kick a number. But you can talk about numbers in useful ways, and we use numbers to talk about the real world. There’s surely a kind of reality there. On the other hand, Luke Skywalker isn’t a real person, but we talk about him all the time. Maybe we can talk about unreal things in useful ways. Jody Azzouni is one of the leading contemporary advocates of nominalism , the view that abstract objects are not “things,” they are merely labels we u...
Jan 03, 2022•1 hr 15 min•Ep. 178
As each December comes to a close, we wrap up another year of podcasts with the Mindscape Holiday Message. Nothing too profound, just some thoughts that wouldn’t fit easily into a regular podcast. This year we’re talking about academic disciplines and cocktails. What do they have in common, you may ask? Listen and find out! Support Mindscape on Patreon . Mindscape will be dark on Monday December 27, and will resume regular programming on Monday January 3. Here are the two books I mentioned in th...
Dec 20, 2021•59 min
Welcome to the December 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Note that there will be no January A...
Dec 15, 2021•3 hr 38 min
When it comes to thinking about quantum mechanics, there are levels. One level is shut-up-and-calculate: find a wave function, square it to get a probability. One level is foundational: dig deeply into the underlying ontology. But there’s a level in between, long neglected but recently coming to life. In this level you think about — or do experiments with — entangled quantum systems in the real world, putting entanglement to use. Monika Schleier-Smith is an experimental physicist specializing in...
Dec 13, 2021•1 hr 11 min•Ep. 177
We all know you can’t derive “ought” from “is.” But it’s equally clear that “is” — how the world actual works — is going to matter for “ought” — our moral choices in the world. And an important part of “is” is who we are as human beings. As products of a messy evolutionary history, we all have moral intuitions. What parts of the brain light up when we’re being consequentialist, or when we’re following rules? What is the relationship, if any, between those intuitions and a good moral philosophy? ...
Dec 06, 2021•1 hr 26 min•Ep. 176
We’ve talked about the very origin of life, but certain transitions along its subsequent history were incredibly important. Perhaps none more so than the transition from unicellular to multicellular organisms, which made possible an incredible diversity of organisms and structures. Will Ratcliff studies the physics that constrains multicellular structures, examines the minute changes in certain yeast cells that allows them to become multicellular, and does long-term evolution experiments in whic...
Nov 29, 2021•1 hr 27 min•Ep. 175
Mathematics is often thought of as the pinnacle of crisp precision: the square of the hypotenuse of a right triangle isn’t “roughly” the sum of the squares of the other two sides, it’s exactly that. But we live in a world of messy imprecision, and increasingly we need sophisticated techniques to quantify and deal with approximate statistical relations rather than perfect ones. Modern mathematicians have noticed, and are taking up the challenge. Tai-Danae Bradley is a mathematician who employs ve...
Nov 22, 2021•1 hr 22 min•Ep. 174
Welcome to the November 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy! See Privacy Policy at https:/...
Nov 17, 2021•3 hr 55 min
It’s a well-worn cliché that oceans cover seventy percent of the surface of Earth, but we tend to give them secondary consideration when thinking about the environment. But climate change is wreaking havoc on the oceans, not to mention pollution and overfishing — 90% of the world’s marine fish stocks are fully exploited or depleted. Today’s guest, Sylvia Earle, is a well-known ocean scientist, a celebrated underwater explorer, and a tireless advocate for the world’s oceans. We talk about the cur...
Nov 15, 2021•1 hr 12 min•Ep. 173
Science and storytelling have a long and tumultuous relationship. Scientists sometimes want stories to be just an advertisement for how awesome science is; storytellers sometimes want to use science for a few cheap thrills before abandoning it in the morning. But science is about ideas, and ideas can make for thrilling stories when done well. David Goyer is an accomplished screenwriter and director who has taken up a daunting task: adapting Isaac Asimov’s famous Foundation series for TV. (Availa...
Nov 08, 2021•1 hr 17 min•Ep. 172
As the holidays approach, we are being reminded of the fragility of the global supply chain. But at the same time, the supply chain itself is a truly impressive and fascinating structure, made as it is from multiple components that must work together in synchrony. From building an item in a factory and shipping it worldwide to transporting it locally, processing it in a distribution center, and finally delivering it to an address, the system is simultaneously awe-inspiring and deeply dehumanizin...
Nov 01, 2021•1 hr 27 min•Ep. 171
There is so much we don’t know about our universe. But our curiosity about the unknown shouldn’t blind us to the incredible progress we have made in cosmology over the last century. We know the universe is big, expanding, and accelerating. Modern cosmologists are using unprecedentedly precise datasets to uncover more details about the evolution and structure of galaxies and the distribution and nature of dark matter. Priya Natarajan is a cosmologist working at the interface of data, theory, and ...
Oct 25, 2021•1 hr 28 min•Ep. 170
Games are everywhere, but why exactly do we play them? It seems counterintuitive, to artificially invent goals and obstacles just so we can struggle to achieve them. (And in some games, like Twister, the fun is in losing, even though you’re supposed to try to win.) C. Thi Nguyen is a philosopher who has developed a theory of games as an art form whose medium is agency. Within each game, we have defined goals, powers, and choices, and by playing different games we can experiment with different fo...
Oct 18, 2021•1 hr 24 min•Ep. 169
Welcome to the October 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy! Support Mindscape on Patreon ....
Oct 14, 2021•2 hr 59 min
Those of us who think that that the laws of physics underlying everyday life are completely known tend to also think that consciousness is an emergent phenomenon that must be compatible with those laws. To hold such a position in a principled way, it’s important to have a clear understanding of “emergence” and when it happens. Anil Seth is a leading researcher in the neuroscience of consciousness, who has also done foundational work (often in collaboration with Lionel Barnett ) on what emergence...
Oct 11, 2021•1 hr 25 min•Ep. 168
Traditional physics works within the “Laplacian paradigm”: you give me the state of the universe (or some closed system), some equations of motion, then I use those equations to evolve the system through time. Constructor theory proposes an alternative paradigm: to think of physical systems in terms of counterfactuals — the set of rules governing what can and cannot happen. Originally proposed by David Deutsch, constructor theory has been developed by today’s guest, Chiara Marletto, and others. ...
Oct 04, 2021•1 hr 35 min•Ep. 167
In the question to understand the biology of life, we are (so far) limited to what happened here on Earth. That includes the diversity of biological organisms today, but also its entire past history. Using modern genomic techniques, we can extrapolate backward to reconstruct the genomes of primitive organisms, both to learn about life’s early stages and to guide our ideas about life elsewhere. I talk with astrobiologist Betül Kaçar about paleogenomics and our prospects for finding (or creating!)...
Sep 27, 2021•1 hr 14 min•Ep. 166
It's pretty clear that our genes affect, though they don't completely determine, who we grow up to be; children’s physical and mental characteristics are not completely unrelated to those of their parents. But this relationship has been widely abused throughout history to underwrite racist and sexist ideas. So there has been a counter-reaction in the direction of removing any consideration of genetic heritage from how we understand people. Kathryn Paige Harden argues in favor of a more nuanced v...
Sep 20, 2021•1 hr 25 min•Ep. 165
Welcome to the September 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy! See Privacy Policy at https:...
Sep 16, 2021•3 hr 39 min
How human beings behave is, for fairly evident reasons, a topic of intense interest to human beings. And yet, not only is there much we don’t understand about human behavior, different academic disciplines seem to have developed completely incompatible models to try to explain it. And as today’s guest Herb Gintis complains, they don’t put nearly enough effort into talking to each other to try to reconcile their views. So that what he’s here to do. Using game theory and a model of rational behavi...
Sep 13, 2021•1 hr 30 min•Ep. 164
Physics is extremely good at describing simple systems with relatively few moving parts. Sadly, the world is not like that; many phenomena of interest are complex, with multiple interacting parts and interesting things happening at multiple scales of length and time. One area where the techniques of physics overlap with the multi-scale property of complex systems is in the study of phase transitions, when a composite system transitions from one phase to another. Nigel Goldenfeld has made importa...
Sep 06, 2021•1 hr 32 min•Ep. 163
There is no general theory of problem-solving, or even a reliable set of principles that will usually work. It’s therefore interesting to see how our brains actually go about solving problems. Here’s an interesting feature that you might not have guessed: when faced with an imperfect situation, our first move to improve it tends to involve adding new elements, rather than taking away. We are, in general, resistant to subtractive change. Leidy Klotz is an engineer and designer who has worked with...
Aug 30, 2021•1 hr 14 min•Ep. 162
Economies in the modern world are incredibly complex systems. But when we sit down to think about them in quantitative ways, it’s natural to keep things simple at first. We look for reliable relations between small numbers of variables, seek equilibrium configurations, and so forth. But those approaches don’t always work in complex systems, and sometimes we have to use methods that are specifically adapted to the challenges of complexity. That’s the perspective of W. Brian Arthur, a pioneer in t...
Aug 23, 2021•1 hr 36 min•Ep. 161
Plato and Aristotle founded much of what we think of as Western philosophy during the fourth and fifth centuries BCE. Interestingly, that historical period also witnessed the foundation of some of the major schools of Chinese philosophy, especially Confucianism and Daoism. This is a long-overdue discussion of ancient Chinese ideas, featuring philosopher and religious-studies scholar Edward Slingerland. We talk about the relationship between these two schools of thought, and their differences and...
Aug 16, 2021•1 hr 24 min•Ep. 160
Welcome to the August 2021 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy! Support Mindscape on Patreon . ...
Aug 12, 2021•3 hr 11 min
Neuroscience has given us great insights into how our brains work. But there is still room for purely humanistic disciplines to help us think through our thoughts and emotions, not to mention the meaning of our lives. Mari Ruti is a professor of English literature, with expertise in critical theory, gender studies, and psychoanalysis, especially the work of French theorist Jacques Lacan. We talk about the psychological drive that is motivated by what Lacan calls “ lack ,” which is related to “de...
Aug 09, 2021•1 hr 50 min•Ep. 159
