

Robinson's Podcast
Robinson Erhardt
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.
https://linktr.ee/robinsonerhardt
https://linktr.ee/robinsonerhardt
Episodes
Mentioned books

Apr 15, 2023 • 1h 56min
76 - Nora Boyd, Siska de Baerdemaeker, & Vera Matarese: The Philosophy of Astrophysics
Robinson’s Podcast #76 - Nora Boyd, Siska de Baerdemaeker, & Vera Matarese: The Philosophy of Astrophysics
Nora Boyd is Assistant Professor of Philosophy at Siena College. Siska de Baerdemaeker is a Researcher at Stockholm University. Vera Matarese is Assistant Professor in Philosophy of Science at the University of Perugia. Both Nora and Siska received their PhDs in History and Philosophy of Science from the University of Pittsburgh, while Vera received hers in the Philosophy of Science at the University of Hong Kong. Along with Kevin Heng, Chair Professor of Theoretical Astrophysics at the Ludwig Maximilian University in Munich (and guest on episode #56), they are the editors of Philosophy of Astrophysics—an anthology on the philosophy of the same and the first of its kind—which will be released open access in early June 2023 (link below). In this episode, Nora, Siska, Vera, and Robinson discuss the origins of the project, as well as many of the topics it covers, such as black holes, dark matter, and whether astrophysics should even be considered a science at all.
The Anthology: https://link.springer.com/book/9783031266171
Nora Boyd: https://facultyweb.siena.edu/~nboyd/
Siska de Baerdemaeker: https://www.siskadebaerdemaeker.com
Vera Matarese: https://sites.google.com/view/veramatarese/home
OUTLINE:
00:00 In This Episode…
00:54 Introduction
7:10 What is Astrophysics?
14:24 What Is the Philosophy of Astrophysics?
25:26 Is Astrophysics Science?
38:29 Astrophysical Models and the Tribunal of Experience
45:33 Data and Theory
1:01:32 Astrophysical Simulations
1:14:17 Fictional Objects
1:20:00 Black Holes and Dark Matter
1:28:01 Processes and Pseudoprocesses
1:34:08 Time
1:47:20 Ethical Issues
1:42:06 Evidence, Theory, and Cold Dark Matter
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 13, 2023 • 1h 55min
75 - Jody Azzouni: Formal Languages, Proof, and the Foundations of Mathematics
Jody Azzouni is Professor of Philosophy at Tufts University. While Jody is best known for his nominalist stance in the philosophy of mathematics, he is also an author of fiction, non-fiction, and poetry. Robinson and Jody discuss one of Jody’s poems in detail before moving on to the philosophy of mathematics and logic. They go over the distinction between natural and formal languages, the roles and varieties of proof in mathematics, and whether mathematics can have foundations. This is Jody’s second appearance on Robinson’s podcast. On his first appearance, episode #45, he and Robinson spoke about the debate between nominalists and platonists in the philosophy of mathematics, Jody’s own deflationary stance, and some adjacent concerns about ontological commitment in both formal and informal languages. His latest book is Attributing Knowledge: What it Means to Know Something (Oxford, 2020).
Jody’s Website: https://jodyazzouni.com
OUTLINE:
00:00 In This Episode…
00:40 Introduction
4:48 “Colored Themes” by Jody Azzouni
36:59 The Difference Between Formal and Natural Languages
1:02:37 The Nature of Mathematical Proof
1:20:36 Can Mathematics Still Have Foundations?
1:26:36 Jody’s Course on Philosophy of Math
1:31:01 Mathematics as a Social Practice
1:37:23 Revolutions in Mathematics
1:40:35 “February” by Giles Goodland
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 10, 2023 • 2h 13min
74 - Stephen Darwall: Violence, Second-Personal Ethics, Philosophy of the Heart
Stephen Darwall is Andrew Downey Orrick Professor of Philosophy at Yale University and John Dewey Distinguished University Professor Emeritus at the University of Michigan. He is a world-renowned moral philosopher who has worked broadly across the ethical landscape, making important contributions to Kant scholarship, legal philosophy, deontology, and countless other areas. In this episode, Robinson and Steve talk about Steve’s strabismus (a visual impairment) and how it affects the way he sees the world, violence and human dignity, second-personal ethics, and Steve’s work on the relationship between philosophy and the heart. This is Steve’s second appearance on Robinson’s Podcast. In his first, episode #49, Steve and Robinson discussed the history of modern ethics, beginning with Hugo Grotius and traveling up through Hobbes, Hume, Kant, Bentham, and Smith before ending with Marx, Kierkegaard, and Nietzsche’s attack on morality. Check out Steve’s book on second-personal ethics, The Second-Person Standpoint: Morality, Respect, and Accountability (Harvard, 2009).
Steve’s Website: https://campuspress.yale.edu/stephendarwall/
OUTLINE:
00:00 In This Episode…
00:35 Introduction
3:57 Creative Pursuits and Strabismus
26:57 Violence and Human Dignity
56:42 Cognitive Science, Violence, and Dignity
1:05:55 What Is Second-Personal Ethics?
1:15:54 Moral Obligation, Recognition, and Second-Personal Ethics
1:27:57 Philosophy of the Heart
1:52:58 Chattel Slavery, Reparations, and the Heart
2:04:22 Steve and the Heart
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 8, 2023 • 1h 39min
73 - Craig Callender: Pseudoscience, Conspiracy Theories, and Philosophy
Craig Callender is Professor of Philosophy and Co-Director of the Institute for Practical Ethics at UC San Diego. Craig works across the philosophy of science, and has published research on the philosophy of physics, applied ethics, the metaphysics of time, and other related areas. In this episode, Craig and Robinson discuss the content of a course he’s been teaching called Science vs Pseudoscience. More particularly, they talk about the boundary between science and pseudoscience, as well as case studies of science, pseudoscience, and conspiracy theories, including super-string theory, psychoanalysis, astrology, and more. Craig’s most recent book, What Makes Time Special? (Oxford University Press, 2017), won the prestigious Lakatos Award in 2018.
Craig’s Website: https://www.craigcallender.com
OUTLINE:
00:00 In This Episode…
00:26 Introduction
7:15 A Course on Science and Pseudoscience
14:43 Karl Popper’s Demarcation Problem
22:56 Superstring Theory
29:26 Psychoanalysis
32:29 Astrology
36:04 Pseudohistory and Expert Selection
47:02 Flat Earth Theory
51:28 Why Clever People Believe Silly Things
1:01:25 Personality Tests
1:14:12 Quantum Mumbo Jumbo
1:25:59 Replicability
1:29:15 Nutritionism
1:35:11 A Perpetual Motion Machine
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 6, 2023 • 1h 46min
72 - Eric Trexler: Philosophy and Methodology in Sports Science
Eric Trexler received his PhD in Human Movement Science from the medical school at the University of North Carolina, Chapel Hill. He is a professional body builder and a sports nutrition researcher, and the co-owner of Stronger By Science, MASS Research Review, and the MacroFactor nutrition app, as well as the co-host of the terrific Stronger By Science podcast. Robinson and Eric discuss some philosophical concerns in sports science, including methodological limitations in study design and human error in scientific reasoning. Among other topics, they address the ecological validity of mechanistic research, ways in which funding and practical constraints guide experimentation, and ethical considerations that factor into the study of steroids and other performance-enhancing drugs.
Eric’s Instagram: https://www.instagram.com/trexlerfitness
Eric’s Twitter: https://www.twitter.com/erictrexler
Stronger By Science: https://www.strongerbyscience.com
MASS Research Review: https://www.strongerbyscience.com/mass/
The MacroFactor Nutrition App: https://www.macrofactorapp.com
OUTLINE:
00:00 In This Episode…
00:50 Introduction
3:28 Human Movement Science
8:02 Performance Effects of Citrulline Malate and Beetroot Juice Supplementation
16:06 Interpreting Mechanistic Research
26:40 Reductive Reasoning and the Carbohydrate-Insulin Model of Obesity
55:59 Limitations of Study Design
01:16:56 Ethical Constraints on Researching Performance-Enhancing Drugs
01:25:40 MacroFactor
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 3, 2023 • 1h 32min
71 - Peter Adamson: Plotinus, Porphyry, and Neoplatonism
Peter Adamson is Professor of Late Ancient and Arabic Philosophy at the Ludwig Maximilian University of Munich and Professor of Ancient and Medieval Philosophy at King's College London. He’s also the host of the podcast History of Philosophy Without Any Gaps and the author of the book series by the same name. Robinson and Peter talk about Neoplatonism—a philosophical movement in late antiquity—and its great thinkers, including Plotinus, Porphyry, Iamblichus, and Proclus, as well as the many issues they thought and wrote about, such as evil, theology, logic, and vegetarianism.
OUTLINE:
02:14 Introduction
7:30 What’s Interesting About Neoplatonism?
5:35 The Etymology of “Neoplatonism”
11:36 Where was Neoplatonism?
19:48 The Great Plotinus
23:56 Plotinus’ Metaphysics
32:30 Plotinus and Theology
39:46 Plotinus on Evil
1:00:15 Porphyry, His Logic, and Arguments for Vegetarianism CLIP
1:18:31 Iamblichus
1:24:02 Proclus
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Apr 1, 2023 • 3h 10min
70 - Elisabeth Camp: Emily Dickinson, Figurative Language, and Representation
Elisabeth Camp is Professor of Philosophy at Rutgers, where she works on the philosophy of language, mind, and aesthetics. As she puts it, her research “focuses on thoughts and utterances that don’t fit standard propositional models.” Liz and Robinson spend the first third of their conversation discussing the poetry of Emily Dickinson and its connections to philosophy. They then move on to the substantial corpus of Liz’s work, touching on frames—or representational devices—various difficult-to-analyze speech acts and devices like insinuation and metaphor, and the semantics of maps. Keep up with Liz and her research at http://www.elisabethcamp.org.
OUTLINE:
00:00 Introduction
3:30 Liz’s Interest in Figurative Language
12:03 Emily Dickinson’s “The first Day’s Night had come”
29:03 Emily Dickinson’s “This World is not Conclusion”
42:36 Mary’s Room as a Literary Creation
49:46 Imaginative Resistance
58:44 Frames as Representational Devices
1:07:34 Liz’s Taste in Problems
1:11:23 Speech Acts
1:16:41 John Searle
1:23:54 Insinuation
1:47:42 Sarcasm
1:51:00 Metaphors
2:19:42 Slurs
2:32:42 Metaphors in Science
2:40:53 Maps and Sentences
2:57:53 Animal Minds and Mental Language
3:05:37 Cognitive Science at Rutgers
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Mar 30, 2023 • 2h 3min
69 - Frank Jackson: Conceptual Analysis, Physicalism, and Mary’s Room
Frank Jackson is Emeritus Professor at the Australian National University. He is best known for the knowledge argument and Mary’s Room—its accompanying thought experiment—but has published widely in the philosophy of mind, epistemology, metaphysics, and the philosophy of language. Frank and Robinson discuss conceptual analysis—or the philosophical technique of examining the meaning, content, or definition of a concept to resolve questions about it—as well as physicalism, reference in the philosophy of language, the knowledge argument, and more. Much of the material discussed in this episode can be found in greater depth in Frank’s 1998 book, From Metaphysics to Ethics: A Defence of Conceptual Analysis.
OUTLINE:
00:00 Introduction
5:42 Growing Up in a Household of Philosophers
11:06 What Is Conceptual Analysis?
16:01 Physicalism, the Location Problem, and Conceptual Analysis
21:00 Conceptual Analysis and the Sorites Paradox
25:48 A Priori Physicalism
38:13 Physicalism in Math and Elsewhere
43:31 Color and the Location Problem
54:10 Ethics and the Location Problem
1:06:49 Metaphilosophy
1:13:13 Naming, Language, and Mind
1:30:05 One-Spaceism and Two-Spaceism
1:39:12 Mary’s Room and the Knowledge Argument
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Mar 27, 2023 • 1h 9min
68 - Simon Blackburn: Moral Realism, Antirealism, and Quasirealism
Simon Blackburn was Professor of Philosophy at the University of Cambridge and Edna J. Koury Distinguished Professor of Philosophy at the University of North Carolina, Chapel Hill. Though he has worked in many areas of philosophy, he is best known for his contributions to metaethics and the philosophy of language. Simon and Robinson discuss the distinction between ethics and metaethics before primarily focusing on the latter, where they explore the concept of realism. Simon’s latest books are Lust and Mirror, Mirror.
OUTLINE:
4:31 Simon’s History with Metaethics
8:20 Distinguishing Ethics and Metaethics
12:57 On Moral Realism
39:42 Frege and the True
43:57 Moral Quasi-realism
54:52 Moral Quasi-realism and Living a Good Life
Robinson’s Website: http://robinsonerhardt.com
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.

Mar 25, 2023 • 2h 9min
67 - David Albert & Tim Maudlin: The Philosophical Foundations of Quantum Theory
David Albert is the Frederick E. Woodbridge Professor of Philosophy at Columbia University, where he directs the Philosophical Foundations of Physics program. Tim Maudlin is Professor of Philosophy at NYU. Both David and Tim are renowned as leading philosophers of physics, though their work extends beyond that to the philosophy of science and metaphysics. David is a prior guest (episodes 23 and 30) of Robinson’s Podcast, as is Tim (episode 46). David, Tim, and Robinson discuss the foundations of quantum theory, beginning with its historical motivation, tracking through some important concepts—superposition and the measurement problem—and then exploring some of its philosophical aspects (such as determinism, realism, the potential for backward causation, and more).
Robinson’s Website: http://robinsonerhardt.com
OUTLINE:
00:00 In This Episode…
00:17 Introduction
2:51 What Motivated the Development of Quantum Theory?
7:05 Superposition and the Measurement Problem
31:42 John Bell’s Theory of Local Beables
44:30 Formalism and Interpretation in Quantum Theory
51:52 The Einstein-Podoksky-Rosen Argument
58:26 On “Interpretations” of Quantum Theory
1:11:17 The Ghirardi-Rimini-Weber Theory of Spontaneous Collapse
1:16:19 The Many Worlds Theory
1:30:46 Determinism
1:46:29 Quantum Mechanics and Quantum Field Theory
1:48:28 Realism
1:52:15 Monism and Entanglement
1:58:19 Backward Causation
2:04:32 An Experiment to Further Foundations
Robinson Erhardt researches symbolic logic and the foundations of mathematics at Stanford University. Join him in conversations with philosophers, scientists, weightlifters, artists, and everyone in-between.


