
Jack Roycroft-Sherry
I'm Jack, an Economics and Data Science student in the beautiful town of Nottingham, England. Stick around if you like hearing from cognitive scientists, psychologists, economists and philosophers.
Latest episodes

Feb 29, 2024 • 60min
How Falling Populations Will Change The World | Stephen J. Shaw (EP41)
Stephen J. Shaw is a data scientist and demographer, and the creator of
"The BirthGap" documentary.
Fertility rates are below replacement in many countries, and the trend
looks like it will spread to the entire world. This will mean population
levels will fall dramatically in the coming decades. Why is this
happening, what will be the consequences, and can we solve these issues
before it's too late?
In this podcast, expect to learn about Stephen's shock that falling
fertility issues are not being recognized as a problem, how the real
problem is due to a crisis of unplanned childlessness, the biological
reality of when you can have children, how society will have to deal
with the inevitable older and shrinking populations, and more.
Find Stephen:
-twitter: @StephenJShaw
-website: https://www.birthgap.org/feed
-Birthgap - Childless World:
https://www.youtube.com/watch?v=A6s8QlIGanA&t=1673s
TIMESTAMPS:
00:00 - Intro
00:20 - Stephen's Alarm at Falling Fertility Being Ignored
04:45 - How Stephen Realized Why Fertility Rates Were Falling
10:47 - How Economic Crises Lead to Childlessness
22:00 - Biological Facts About When You Can Have Children
26:30 - The Risks of Not Having Children When You Can
29:28 - Inevitable Aging Societies and Population Declines
46:16 - The Trade-off Between Economic Growth and Having Children
53:00 - Impact of Falling Populations

Feb 29, 2024 • 1h
Cognition, Consciousness, & The Future of Ai | Maxwell Ramstead (EP41)
Maxwell Ramstead is a cognitive scientist and physicist, and Director of
Research at VERSESAI.
What if we could build AI that performs real inference, just as humans
do? What will the future of AI look like? Understanding cognition,
active inference, collective intelligence, and consciousness can help us
find out.
Expect to learn about AI that conducts real-time inference and learning,
how to conceptualize LLMs, why it doesn't make sense to think of
"general intelligence" or AGI, how all intelligence is inherently
collective, about the nature of consciousness and the self, and more...
TIMESTAMPS:
00:00 - Intro
00:26 - VERSESAI and Utilizing Cognitive Science to Design AI
09:39 - How All Intelligence Is "Collective Intelligence"
22:26 - Innovative Approaches to AI Development
30:46 - Computational Specialization & The Intelligence of Distributed Cognition
38:26 - Explaining Consciousness Using the FEP
53:56 - Debating the Unity of Consciousness
MAXWELL RAMSTEAD:
-X: @mjdramstead
-Research: https://www.researchgate.net/profile/Maxwell-Ramstead
REFERENCED IN THE EPISODE:
-Podcast on improving computation by learning from biology: https://youtu.be/4iR6lVxioHs
-Podcast on collective intelligence and the flowy, multifractal nature of cognition: https://youtu.be/nwj9TZDguwc
FOLLOW THE PODCAST:
-Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=62c281d9e8274694
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Feb 19, 2024 • 50min
Cognitive Science of Social Media, Technology, & Meaning | Mark Miller & Ben White (EP 38)
[Re-uploaded podcast with audio at the start fixed]
Mark Miller is a cognitive scientist, and Ben White is currently
completing a PhD in the philosophy of cognitive science.
From social media to AI to smart environments, technologies are
transforming our lives. How can we understand the profound positive and
negative effects they have? Cognitive science provides a framework to
understand how these technologies influence our minds.
In this podcast, expect to learn about the benefits and harms of social
media, how social media subverts our natural drives, beliefs, and
expectations that typically guide us through the world, how we are
natural-born cyborgs that instinctively embrace technologies, and how we
should think about ourselves and our relationship with technologies in
this context.
Timestamps:
00:00 - Intro
02:19 - The Predictive Processing Framework of Cognition
06:40 - How Social Media Impacts Us Psychologically
09:48 - How Social Media Subverts Our Cognition
17:40 - Social Media Takes Advantage of Natural Social Proclivities
22:37 - Why We Are Drawn To Social Media In the First Place
26:10 - Technology and How to Improve It
31:57 - Understanding Technology & Natural Born Cyborgs
43:00 - Predictive Processing as a Unified Framework in Cognitive Science
Find Ben and Mark's work:
-Ben's work: https://scholar.google.com/citations?user=0Or4GMkAAAAJ&hl=en
-Mark's Website: https://www.markdmiller.live/
Jack Roycroft-Sherry:
-Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=62c281d9e8274694
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Feb 19, 2024 • 48min
The Science Behind The Placebo Effect | Jonathan Davies (EP 40)
Jonathan Davies is a Postdoctoral Research Fellow at the Contemplative
Studies Centre within the School of Psychology, renowned for his
expertise in the placebo effect and meditation.
The placebo effect is real and incredibly powerful. How and why does it
work? And how will it change our understanding and practice of medicine
going forward?
Expect to learn about how placebos were discovered, how they work within
a cognitive science and psychological framework, why the placebo effect
might never be separated from so-called "real" or "biological" effects,
how placebos may have helped ancient cultures with their medicine, and
more...
00:00 - What is the Placebo Effect?
01:49 - The Placebo Effect Found During World War II
04:00 - How the Placebo Effect Works
08:46 - Western Medicine and The Difficulty Separating Placebo from "Real" Effects
12:43 - Placebos Used in Ancient Medicine & Shamanism
18:06 - Meditation and the Placebo Effect
29:20 - Placebo Meditation Works Surprisingly Well
39:10 - How Placebo The Effect May Change Medicine
43:02 - Meditation Apps
Jonathan Davies:
-website:https://psychologicalsciences.unimelb.edu.au/CSC/news/csc-staff-profile-dr-jonathan-davies
-papers: https://scholar.google.com/citations?user=Y54gmsIAAAAJ&hl=en

Feb 19, 2024 • 58min
How Understanding The True History of Capitalism Helps Fix It - Erica Schoenberger (EP 39)
Erica Schoenberger is an economic geographer and environmental
historian.
We often think that capitalism is somehow natural and inevitable. The
real story is a bit more complicated. The first markets came about
through wars and the projects of the rich, disrupting the lives of many.
How can we come to understand the true history of capitalism?
Expect to learn about how markets were created by states to help fund
wars, how markets and states are intertwined and rely on each other, how
capitalism and money have evolved over time, modern economic systems
and unnecessary work, the economy's need for perpetual growth, how to
keep the good parts of capitalism without the bad, and more...
00:00 - Intro
00:39 - What We Misunderstand about Capitalism and Money
10:45 - Why Capitalism and Markets Are Unnatural
18:30 - How Wars Led To Capitalism
21:05 - Gold as a Means of Control
29:38 - The Paradoxical Nature of Money
35:26 - How the State and Market Evolved Together
38:36 - "Bullshit" Jobs
43:34 - Improving Capitalism
49:23 - Capitalism's Need for Perpetual Growth
Erica Schoenberger:
-https://engineering.jhu.edu/faculty/erica-schoenberger/
-Most recent book: Nature, Choice and Social Power
Jack Roycroft-Sherry:
-Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=103427a899754a3f
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Feb 10, 2024 • 1h 45min
The Evolutionary Psychology Behind Falling Fertility | Jose Yong (EP 37)
Jose Yong is an evolutionary psychologist.
Why are fertility rates falling across the world? What is about our
modern lives that might explain this? Evolutionary psychology have some
answers.
Expect to learn about why our social media filled world makes us starved
for social status and thus less likely to have kids, whether cities are
the cause of falling fertility, why the problem is so dire in East
Asian countries, why our modern world makes us feel bad, the origins of
monogamy, and much more...
TIMESTAMPS
00:00 - Intro
00:20 - Why Jose Studied Evolutionary Psychology
03:44 - Men and Women's Opposite Mating Strategies
06:00 - Does evolutionary theory actually apply to modernity?
11:40 - Why Falling Fertility Rates Are Falling
18:06 - The Problem of Huge Status Disparities
28:26 - The Crisis In Japan & "Otakus"
34:33 - Why We Over-Think Having Children
42:48 - Are Cities Why Fertility Rates Are Falling?
51:10 - How Evolutionary Adaptations Can Go Wrong
01:02:50 - The Interesting Case of The Mosuo Tribe
01:06:50 - Is Monogamy A Recent Invention?
1:11:57 - What Is The Meaning Of Life?
1:17:50 - Reflecting On The Modern World For Men
Jose Yong:
-Website: https://joseyong.com/index.html
-Status Mistmatch Paper:
https://akjournals.com/view/journals/2055/aop/article-10.1556-2055.2022.00028/article-10.1556-2055.2022.00028.xml
Jack Roycroft-Sherry:
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Jan 30, 2024 • 1h 5min
Reality, Illusion, Skepticism, Love & Beauty - D.C Shindler (EP 36)
David C. Shindler is a Professor of Metaphysics and Anthropology at the
John Paul II Institute, Washington, DC.
If modern physics tells us that time and reality are not as they appear
to us, what is real? Can we ever know and touch reality? Relatedly, does
objective truth exist (or is it just in our minds)? This podcast
explores these questions through philosophy.
In this podcast, we consider the nature of truth, whether reality could
be an illusion, how to deal with skeptical over the realness of truth,
as well as how love, beauty, and goodness, relate to these questions.
Timestamps:
00:00 - Intro
00:25 - Ancient Philosophy vs Academic Philosophy
10:00 - Theory Of Everything in Philosophy?
13:52 - Truth, Illusion, & Realness
21:59 - Skepticism About Reality
28:08 - Free Will and Nature of Truth
31:32 - Connection Between Truth, Goodness & Beauty
42:07 - Rituals and Symbols
58:38 - Unity and Disunity
D.C Shindler
-Website: https://www.johnpaulii.edu/academics/faculty/d-c-schindler/
-(Book) Freedom from Reality: The Diabolical Character of Modern Liberty
-(Book) Love and the Postmodern Predicament: Rediscovering the Real in Beauty, Goodness, and Truth
Jack Roycroft-Sherry:
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Nov 17, 2023 • 1h 1min
Meditation And Pure Consciousness Experiences - Toby Woods | EP 23
Toby Woods is a scientist at the Monash Centre for Consciousness and
Contemplative Studies.
Subjective experience is notoriously difficult to study scientifically.
This is even more the case for subjective experience in meditation and
for this reason it has not been widely examined. In this podcast I am
joined by Toby Woods, who is part of a growing movement to examine
meditation experiences in a systematic and fine-grained manner using
scientific methods.
In the podcast we discuss the experience of "stillness" or "pure
consciousness" in meditation, including the content that is present and
absent, and we compare the experiences attained in different types of
practices. We also look at the benefits of accessing the stillness and
the risks and benefits of practising meditation more generally.
TIMESTAMPS
00:00 Start
0:40 Why Meditation Is Interesting To Study
3:20 What is Meditation?
9:30 Contentless Experience and Pure Consciousness
18:50 Beginner vs Advanced Meditators / Different Traditions
30:10 Buddhism and Advanced States of Meditation
33:35 Different Meditation Techniques For Different People
37:22 Science of Enlightenment
40:00 "Cessation" / Dropping Out of Consciousness
46:49 Risks of Meditation
55:45 Attention, Smartphones and Modern Distractions
TOBY WOODS
-Toby on X/Twitter: @TobyJWoods
-Toby's papers:
1. Analysis of contentless goal-states using expert texts
https://link.springer.com/article/10.1007/s11097-022-09811-z
2. Analysis of paths to contentless goal-states using expert texts
https://link.springer.com/article/10.1007/s11097-022-09812-y
3. Analysis of contentless experience using participant reports
https://link.springer.com/article/10.1007/s12671-023-02145-0
MENTIONED IN THE PODCAST
-Example of Peter Sedlmeier and Karin Matko papers on types of meditation practices:
https://link.springer.com/article/10.1007/s12671-021-01641-5
-Papers by Ruben Laukkonen and colleagues on cessation:
https://pubmed.ncbi.nlm.nih.gov/37714573/
https://pubmed.ncbi.nlm.nih.gov/37777153/
-Seminal paper by Willoughby Britton, Jared Lindahl and colleagues on adverse experiences in meditation:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5443484/
-Article on how "silent walking" is taking off on TikTok:
https://www.abc.net.au/news/2023-10-08/silent-walking-taking-off-on-tiktok-boosting-youth-mental-health/102938224
JACK ROYCROFT - SHERRY
-Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=62c281d9e8274694
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Nov 12, 2023 • 1h 34min
Psychotherapy, Addiction, Attachment, & Avoidance - Garri Hovhannisyan | EP 22
Garri Hovhannisyan recently completed his PhD in clinical psychology and
is working towards becoming a fully qualified clinical psychologist.
In this podcast, we explore what happens when someone starts
psychotherapy, both from the patient's and the psychotherapist's
perspectives. We discuss the biggest challenges and setbacks one faces
in this journey. We also discuss attachment theory, personality theory,
& addiction.
TIMESTAMPS:
00:00 - Introduction
2:00 - Who Garri is
2:54 - Garri's approach to psychotherapy
5:30 - What happens at the beginning of psychotherapy
14:00 - What the psychotherapist does
18:30 - Psychology of avoidance
23:25 - History of schools in psychotherapy
31:00 - Emotion-focused therapy
33:50 - Garri's style of psychotherapy
39:00 - Attachment theory
1:01:00 - Should we change our attachment style?
1:18:00 - Addiction
GARRI:
-Our previous podcast on the big 5 personality theory: https://www.youtube.com/watch?v=6fCdKTqh7CA
-Academic papers: https://philpeople.org/profiles/garri-hovhannisyan
PODCAST:
-Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=62c281d9e8274694
-X: https://twitter.com/jack_roycroft
-Medium: https://medium.com/@jackroycroftsherry

Nov 7, 2023 • 1h 20min
UFOs, Aliens, Existential Risks, Prediction Markets, and Academia - Robin Hanson | EP 21
Robin Hanson is an economist at George Mason University.
In this podcast we start off by exploring the panspermia hypothesis as a
plausible explanation for both the origins of life on earth and UFO
sightings. We then delve into existential risks to our species, such as
declining population levels and AI. Finally, we cover the nature of
money, economics, prediction markets, and academia and science.
ROBIN HANSON
-Learn more about Robin Hanson and his work:
https://economics.gmu.edu/people/rhanson
-Twitter: https://x.com/robinhanson?s=20
-Substack: https://www.overcomingbias.com/
THE PODCAST
Jack Roycroft-Sherry Podcasts: -Spotify: https://open.spotify.com/show/0DGVMa1qAI1huc87xNDrgy?si=62c281d9e8274694-X: https://twitter.com/jack_roycroft-Medium: https://medium.com/@jackroycroftsherry