502 Conversations - Science, Skepticism, Pseudoscience, Philosophy, and more.

Brian Kerby

Audio uploads of Dedham TV's "502 Conversations". Conversations with experts in their fields about science; skepticism; medicine; quackery; pseudoscience; philosophy; belief, why and how we believe; knowledge; and more. Guests have included Dr. Paul Offit; microbiologist Natalia Pasternak; Julia Sweeney; Sheldon Helms; JAMA Editor in Chief Dr. Howard Bauchner; Massimo Pigliucci; James Randi; Ray Hyman; James Alcock; Dr. Harriet Hall; and others. Full interviews also available on youtube. © 2022 Dedham TV. Unauthorized duplication, for any reason, without permission is prohibited.

  1. Cannabis: Benefits vs. Harm - What's the Evidence? with Dr. Christopher Labos

    5D AGO

    Cannabis: Benefits vs. Harm - What's the Evidence? with Dr. Christopher Labos

    A rebuttal, of sorts, to episode 134 of The Body of Evidence, "Medical Cannabis: Where Are We?". Dr. Labos is a cardiologist with a degree in epidemiology. He writes for the Montreal Gazette, makes regular appearances on CBC radio and TV, and is host of The Body of Evidence podcast, where he takes a skeptical eye at health claims and looks at the body of evidence on a varietyof health topics. He is a Course Lecturer in the Department of Epidemiology,Biostatistics and Occupational Health. He is also the author of the book: Does Coffee Cause Cancer and Eight More Myths About the Food We Eat. © 2026 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. A video version of this video is available at https://youtu.be/H2KuLpC_W48 or at briankerby.com Body of Evidence medical cannabis episodehttps://bodyofevidence.ca/134-medical-cannabis-where-are-we  Dr. Labos’ article on cannabis and driving: https://montrealgazette.com/opinion/columnists/christopher-labos-the-risks-of-mixing-driving-and-cannabis Selected sources: Di Ciano, P., Rajji, T. K., Hong, L. E., Zhao, S. Y. F., Byrne, P., Elzohairy, Y., Brubacher, J. R., McGrath, M. J., Brands, B., Chen, S., Wang, W., Hasan, O. S. M., Wickens, C. M., Kaduri, P., & Foll, B. L. (2024). Cannabis and Driving in Older Adults. JAMA, 7(1), e2352233. https://doi.org/10.1001/jamanetworkopen.2023.52233 Han, B. H., Brennan, J. J., Orozco, M. A., Moore, A. A., & Castillo, E. M. (2023). Trends in Emergency Department Visits Associated With Cannabis Use Among Older Adults in California, 2005–2019. Journal of the American Geriatrics Society, 71(4), 1267–1274. https://doi.org/10.1111/jgs.18180 Hughes, A. R., Grusing, S., Lin, A., Hendrickson, R. G., Sheridan, D. C., Marshall, R., & Horowitz, B. Z. (2022). Trends in intentional abuse and misuse ingestions in school-aged children and adolescents reported to US poison centers from 2000-2020. Clinical Toxicology, 61(1), 64–71. https://doi.org/10.1080/15563650.2022.2120818 Jeffers, A. M., Glantz, S., Byers, A. L., & Keyhani, S. (2024). Association of cannabis use with cardiovascular outcomes among US adults. Journal of the American Heart Association, 13(5), e030178. https://doi.org/10.1161/jaha.123.030178 Jefsen, O. H., Erlangsen, A., Nordentoft, M., & Hjorthøj, C. (2023). Cannabis use disorder and subsequent risk of psychotic and nonpsychotic unipolar depression and bipolar disorder. JAMA Psychiatry, 80(8), 803. https://doi.org/10.1001/jamapsychiatry.2023.1256 Kamel, I., Mahmoud, A. K., Twayana, A. R., Younes, A. M., Horn, B., & Dietzius, H. (2025). Myocardial Infarction and Cardiovascular Risks Associated With Cannabis Use: A Multicenter Retrospective Study. JACC Advances, 101698. https://doi.org/10.1016/j.jacadv.2025.101698 Myran, D. T., Gaudreault, A., Pugliese, M., Dujovny, M., & Tanuseputro, P. (2023). Cannabis-Involved traffic injury emergency department visits after cannabis legalization and commercialization. JAMA, 6(9), e2331551. https://doi.org/10.1001/jamanetworkopen.2023.31551Pierce, A. (2023, January 9). Cannabis-Related Emergency Department Visits Among Older Adults on the Rise. https://health.ucsd.edu/news/press-releases/2023-01-09-cannabis-related-emergency-department-visits-among-older-adults-on-the-rise/ Pravosud, V. (2025). Cannabis use among older adults. JAMA. https://doi.org/10.1001/jamanetworkopen.2025.10173Stall, N. M., Shi, S., Malikov, K., Wang, S., Rochon, P. A., Hillmer, M. P., & Zipursky, J. S. (2024). Edible cannabis legalization and cannabis poisonings in older adults. JAMA Internal Medicine, 184(7), 840. https://doi.org/10.1001/jamainternmed.2024.1331 Toce, M. S., Monuteaux, M. C., Fishman, M. D., & Hudgins, J. D. (2025). Emergency department visits for cannabis hyperemesis syndrome among adolescents. JAMA Network Open, 8(7), e2520492. https://doi.org/10.1001/jamanetworkopen.2025.20492

    1h 7m
  2. Timothy Redmond ~ Highly Effective Thinkers: Critical Thinking for Kids

    10/23/2025

    Timothy Redmond ~ Highly Effective Thinkers: Critical Thinking for Kids

    Timothy Redmond, PhD teaches high school history, government, and critical thinking and is an adjunct professor at Daemen College. He is a Jackson Center fellow, the recipient of the 2019 Toby Ticktin Back Award for excellence in Holocaust education, and an associate director of the Human Rights Academy. He is the author of Political Tribalism in America: How Hyper-Partisanship Dumbs Down Democracy and How to Fix It. Dr. Redmond also has a monthly newspaper column, “The Examined Life,” which appears in the East Aurora Advertiser.© 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. A video of this conversations is available at https://youtu.be/nmb5aOpim34

    1h 2m
  3. Raising A Skeptical Kid with Ronald Crouch

    10/01/2025

    Raising A Skeptical Kid with Ronald Crouch

    Dr. Crouch, or Dr. Dad as he is known online, is a psychologist, former meditation teacher, and author. He has published research in peer-reviewed academic journals, written therapy workbooks for children, and is the author of the Beyond Belief book series, which teaches children critical thinking skills using fun paranormal mysteries. © 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. A video version of this show is available at Raisingaskepticalkid.com Inventing the randomized trial and the 1835 trial of homeopathy https://pmc.ncbi.nlm.nih.gov/articles/PMC1676327/ 00:00 Intro and bio  01:56 How did Dr. Dad, raising a skeptical kid.com, andBeyond Belief come about?  02:56 Some definitions: What is skepticism, and what is critical thinking?  07:41 S.M.A.R.T skills  08:45 Response to: children are too young for criticalthinking, leave it to their parents and don’t ruin childhood.  10:55 What does research say about children and criticalthinking?  12:10 How to instigate critical thinking skills in children   13:28 Using spooky things and urban legends to teach critical thinking  16:43 Children teaching CT to adults  17:37 “Science itself isn’t enough to teach criticalthinking skills” - scientists that go astray, MDs that become homeopaths or acupuncturists  20:54 Homeopathy explained  24:54 A test of homeopathy  26:36 Using critical thinking to evaluate authority  29:35 Using paranormal shows to instill critical thinking  36:52 Critical thinking field trips  40:32 Beyond Belief books series for kids  42:27 Critical thinking for seniors…  46:10 Meditation and critical thinking  50:31 Dr. Crouch’s therapy workbooks for children, educationabout emotions and regulation of emotions  51:28 Wrapup and outro

    51 min
  4. Dr. Joe Pierre ~ False: How Mistrust, Disinformation, and Motivated Reasoning Make Us Believe Things That Aren’t True

    04/26/2025

    Dr. Joe Pierre ~ False: How Mistrust, Disinformation, and Motivated Reasoning Make Us Believe Things That Aren’t True

    Dr. Joe Pierre is a Professor in the Department of Psychiatry and Behavioral Sciences at the University of California, San Francisco; and the Unit Chief of the Langley Porter Psychiatric Hospital Adult Inpatient Unit. He has extensive clinical experience working with individuals with psychotic disorders, substance use disorders, and those with “dual diagnosis.”Dr. Pierre has authored over 100 papers, abstracts, and book chapters and has been featured in numerous articles; media interviews, and the award-winning documentary Behind the Curve. © 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. A video version of this show is available at https://youtu.be/YhlDchaF-G4

    56 min
  5. The Telepathy Tapes: Hope or Hype? with Stuart Vyse, Psychologist & Behavioral Scientist

    03/23/2025

    The Telepathy Tapes: Hope or Hype? with Stuart Vyse, Psychologist & Behavioral Scientist

    A video version of this show is available at ⁠⁠https://youtu.be/jNo6479P3C4 Stuart Vyse is a behavioral scientist, teacher, and writer, with a PhD in psychology. He is an expert on superstition and irrational behavior, and has been quoted in the New York Times, the Washington Post, the Los Angeles Times. Dr. Vyse has appeared on CBS Sunday Morning, CNN International, the PBS NewsHour, and NPR’s Science Friday. Dr. Vyse is the author of several books, including Believing in Magic: The Psychology of Superstition, which won the William James Book Award of the American Psychological Association; Superstition: A Very Short Introduction; and, The Uses of Delusion: Why It’s Not Always Rational to be Rational.He is a contributing editor for Skeptical Inquirer magazine with his “Behavior & Belief” column, and has also written for the Observer, Medium, The Atlantic, The Good Men Project, Tablet, and Time.Dr. Vyse is a Fellow of the American Psychological Association, the Association for Psychological Science, and the Committee for Skeptical Inquiry. © 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. Further resources:stuartvyse.comfacilitatedcommunication.orghttps://www.youtube.com/@fcisnotscienceStuart Vyse “The Telepathy Tapes” article: https://skepticalinquirer.org/exclusive/the-telepathy-tapes-a-dangerous-cornucopia-of-pseudoscience/Prisoners of Silence PBS Frontline 1993 https://ia902900.us.archive.org/33/items/PrisonersofSilence/Frontline.S11E17.Prisoners.of.Silence.1993.VHSRip.AAC2.0.x264-rattera.mp4Project Alpha: https://skepticalinquirer.org/1983/07/the-project-alpha-experiment-part-1-the-first-two-years/https://skepticalinquirer.org/1983/10/the-project-alpha-experiment-part-2-beyond-the-laboratory/N-Rays “The story of N-rays, which fooled many respectable scientists, has been used ever since as a cautionary tale of how easy it is to deceive oneself into seeing something that is not really there.” https://www.aps.org/archives/publications/apsnews/200708/history.cfmand https://www.wired.com/2014/09/fantastically-wrong-n-rays/

    59 min
  6. Bernie Garrett ~ The New Alchemists: The Rise of Deceptive Healthcare

    02/21/2025

    Bernie Garrett ~ The New Alchemists: The Rise of Deceptive Healthcare

    A video version of this conversation is available at https://youtu.be/uJ-ufcTJQnY Bernie Garrett, PhD, is a professor at the University of British Columbia (UBC) School of Nursing with over 35 years of experience in both critical care nursing and nursing education in the UK and Canada. He holds a PhD in information science, and has a number of specialist clinical and educational qualifications. Bernie Garrett has authored several science and clinical textbooks; chapters in edited books; and numerous research papers. His work is underpinned by a passion for health science and technology, and he holds provincial and national awards for his work in furthering nurse education. © 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. References:“An act establishing a board of registry in naturopathy.” n.d. https://malegislature.gov/Laws/SessionLaws/Acts/2016/Chapter400.Atwood, Kimball C. and Massachusetts Medical Society. 2001. “Naturopathy: A Monograph.” https://centerforinquiry.s3.amazonaws.com/wp-content/uploads/sites/33/2021/07/12132253/opposition.pdf.Garrett, Bernard M., and Roger L. Cutting. 2017. “Magical Beliefs and Discriminating Science From Pseudoscience in Undergraduate Professional Students.” Heliyon 3 (11): e00433. https://doi.org/10.1016/j.heliyon.2017.e00433.Garrett, Bernie, Sue Murphy, Shahin Jamal, Maura MacPhee, Jillian Reardon, Winson Cheung, Emilie Mallia, and Cathryn Jackson. 2018. “Internet Health scams—Developing a Taxonomy and Risk‐of‐deception Assessment Tool.” Health & Social Care in the Community 27 (1): 226–40. https://doi.org/10.1111/hsc.12643.Garrett, Bernie, Timothy Caulfield, Blake Murdoch, Matt Brignall, Atul Kumar Kapur, Susan Murphy, Erin Nelson, et al. 2021. “A Taxonomy of Risk‐associated Alternative Health Practices: A Delphi Study.” Health & Social Care in the Community 30 (3): 1163–81. https://doi.org/10.1111/hsc.13386.Risk of Deception Tool https://news.ubc.ca/wp-content/uploads/2018/09/RoD-tool.pdfRosa L, Rosa E, Sarner L, Barrett S. A Close Look at Therapeutic Touch. JAMA. 1998;279(13):1005–1010. doi:10.1001/jama.279.13.1005https://jamanetwork.com/journals/jama/fullarticle/187390“VHA Directive 1137- VA Provision of Complementary-Integrative Health.” n.d. https://www.va.gov/WHOLEHEALTH/professional-resources/clinician-tools/cih.asp.

    59 min

  7. 02/04/2025

    Education Research Specialist Katharine Beals ~ The falsity of facilitated communication

    Katharine Beals has a PhD in linguistics, is adjunct assistant at the Graduate School of Education at the University of Pennsylvania, and is an adjunct professor at both the Drexel University and Temple University schools of education. Dr. Beals specializes in language and literacy acquisition in autism, language technologies for autistic individuals, educational challenges for students with autism, evidence based instruction, and the problems with FC as an intervention in autism. © 2025 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. Video version available at https://youtu.be/nldpkNllFDE Sources: D’Souza, K. (2022). A movement rises to change the teaching of reading. EdSource. https://edsource.org/2022/a-movement-rises-to-change-the-teaching-of-reading/675989 Travers, J., & Ayres, K. (2015). A critique of presuming competence of learners with autism or other developmental disabilities. Education and Training in Autism and Developmental Disabilitites, 50(4), 371–387. Travers, J. (2020). Rapid prompting method is not consistent with evidence-based reading instruction for students with autism. Perspectives on Language, Winter 2020. https://tinyurl.com/4up9y7nd

    58 min
  8. 2024 Cardiology Year in Review - with Dr. Christopher Labos

    01/01/2025

    2024 Cardiology Year in Review - with Dr. Christopher Labos

    Cholesterol denialism Dr. Christopher Labos is a cardiologist with a degree in epidemiology. He spends most of his time doing things for which he does not get paid, like research, teaching, podcasting, and speaking with me. He writes for the Montreal Gazette, makes regular appearances on CBC radio and TV, and is co-host of The Body of Evidence podcast, where he and Jonathan Jarry take a skeptical eye at health claims and look at the body of evidence on a variety of health topics. He is also the author of the book: Does Coffee Cause Cancer and Eight More Myths About the Food We Eat. © 2024 Dedham TV. Unauthorized duplication, for any reason, without permission, is prohibited. Video version available at https://youtu.be/JUJKfcEWiqY Links to topics/papers mentioned in the show: Cholesterol denialism https://www.medscape.com/viewarticle/cholesterol-denialism-pseudoscience-2024a100083z Endurance exercise https://www.medscape.com/viewarticle/too-much-good-thing-can-endurance-exercise-be-harmful-2024a1000fhx and https://www.sciencedirect.com/science/article/pii/S0870255124000799?via%3Dihub Multivitamins, cocoa extract and dementia https://www.medscape.com/viewarticle/996926 and https://www.medscape.com/viewarticle/981780 https://www.mdedge.com/cardiology/article/270665/arrhythmias-ep/skip-potassium-after-cardiac-surgery Intermittent fasting https://www.medscape.com/viewarticle/1000544 Sodium vs. potassium for BP https://www.medscape.com/viewarticle/999805 Internal mammary ligation for angina RCT https://www.nejm.org/doi/abs/10.1056/NEJM195905282602204 Chelation therapy https://www.mcgill.ca/oss/article/medical/study-gets-heart-controversial-chelation-therapy

    53 min
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3 Ratings

About

Audio uploads of Dedham TV's "502 Conversations". Conversations with experts in their fields about science; skepticism; medicine; quackery; pseudoscience; philosophy; belief, why and how we believe; knowledge; and more. Guests have included Dr. Paul Offit; microbiologist Natalia Pasternak; Julia Sweeney; Sheldon Helms; JAMA Editor in Chief Dr. Howard Bauchner; Massimo Pigliucci; James Randi; Ray Hyman; James Alcock; Dr. Harriet Hall; and others. Full interviews also available on youtube. © 2022 Dedham TV. Unauthorized duplication, for any reason, without permission is prohibited.

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