
What we’re about
"Scientific Skepticism" is a social movement that began in the 1970s to investigate & debunk topics like ESP, faith healing, astrology, UFOs, ghosts, and other "paranormal" phenomena. Skepticism was essentially a pro-science movement in reaction against the rise of New Age mysticism on the left and Christian fundamentalism on the right. Over time, the skeptic movement has addressed other debates about the dividing lines between science & pseudoscience, medicine & quackery, history & mythology, reason & faith, etc., and has tried to ascertain why people often hold irrational beliefs and how they might be persuaded to adopt more evidence-based beliefs.
"Skeptics In The Pub" started in London in 1999 as an informal social event designed to promote fellowship and social networking among scientific skeptics, free thinkers, rationalists, science enthusiasts, and other kindred spirits. The group is now held in various forms around the world, with well over a hundred local chapters.
The Philadelphia chapter of "Skeptics in the Pub" was founded back in 2014 and hosts bi-weekly group discussions on a range of topics related to science and rationality. There's several things that set our group apart from many other skeptic groups out there:
(1) While most Skeptics in the Pub chapters rely on guest lecturers, we're primarily an intellectual discussion group. That means that our regular bi-weekly meetups have a discussion topic and require some preparation and involve active participation.
(2) Most other chapters of Skeptics in the Pub host their events in "pubs" as the name suggests, but we found them to be too loud and shifted to cafes in 2017. However, since the COVID pandemic began in 2020, most of our events have moved online. Even with the pandemic over, we've found that online events have a big advantage in terms of being able to attract participants from all over America and even overseas, rather than just catering to people in the Philly metro area.
(3) When it comes to addressing pseudoscience & the paranormal, we tend to address controversies among serious scientists & scholars that aren't clear cut rather than just debunking fringe beliefs like homeopathy, Flat Earth, Bigfoot, ghosts & alien abductions for the hundredth time. We typically only address pseudo-scientific beliefs once they become widespread enough to cause major risks or interfere with major benefits to society (e.g. the anti-vaccine, anti-flouride, anti-GMO, anti-nuclear power, AI doomer, AIDS denial, COVID denial, and climate change denial movements). We also try to understand the social & psychological factors behind pseudoscientific beliefs.
(4) While we champion the scientific approach to empirical questions, we're careful to avoid a common pitfall of some skeptic groups -- i.e. "scientism" -- the application of science to non-empirical questions in fields like ethics, aesthetics & political philosophy. Also, while we generally defer to the scientific establishment, we also occasionally act as critics when it comes to issues like funding biases, academic fraud, and the replication crisis.
(5) When we cover conspiracy theories, we tend to focus less on bizarre beliefs about "Men in Black" and the "Illuminati" in favor of somewhat more plausible allegations of political corruption, corporate malfeasance, police cover-ups, covert military actions, domestic spying, etc. We also look at how low science literacy & internet echo chambers lead many normal people to go beyond realistic concerns about Big Government & Big Business and embrace irrational conspiracy theories.
(6) We tend to cover "pseudo-history" more than other skeptic groups. While the skeptic movement has done a fairly good job debunking far-out claims about "ancient aliens" & lost civilizations like Atlantis, we tend to focus more on dubious historical claims that have bigger implications for modern-day politics like the various cases of genocide denial (e.g. Holocaust, Holodomor), Neo-Confederate "Lost Cause" apologetics about the Civil War, the 1619 Project's revisionism, the antisemitic theories of the Black Hebrew Israelites & the Nation of Islam, and historical conspiracy theories about Pearl Harbor, the JFK assassination, the Apollo moon landing, the 9/11 attacks, etc. We also occasionally cover lighter topics related to mythology, folklore & urban legends from both a historical & socio-psychological perspective.
(7) When we address problems with the news media, instead of debunking obvious hoaxes from junk tabloids & "fake news" websites, we tend to focus on problems within the mainstream media coverage, such as the exaggeration of scientific findings in "pop science" journalism, political biases that corrupt journalistic objectivity, and the fear-mongering that drives "moral panics". We also try to help members cut through conflicting accounts of highly polarizing events, like foreign wars or domestic social turmoil, and find out what's probably true and what's unwarranted speculation or outright disinformation.
(8) Although we occasionally address ethical & political issues, we do so from a non-partisan, empirical approach. Any politician, pundit or political party that makes claims that are unsupported by logic & evidence are open for criticism. There's also no expectation that members have specific ethical or political commitments, beyond a commitment to the use of reason & empiricism to make arguments and support for free inquiry & open debate. Whether or not atheists should adopt specific secular philosophies like "ethical humanism", "objectivism", "transhumanism", "longtermism", "effective altruism", etc., or even whether or not a scientific worldview can support certain ethical or political principles is an open question as far as this group is concerned.
(9) While most skeptic groups double as atheist groups, this meetup doesn't require members to have any particular position on abstract metaphysical questions like the existence or non-existence of a "higher power” or "ground of being", free will vs determinism, the nature of the "self", the hard problem of consciousness, panpsychism, the simulation hypothesis, the multiverse, etc. While many of the supernatural claims made by traditional organized religions are either unfalsifiable or don't withstand scientific scrutiny, the skeptic movement's major figures have had a variety of metaphysical positions, from Carl Sagan's pantheism to Richard Dawkins' anti-theism, and from Paul Kurtz's "ignosticism" to Martin Gardner's "fideism". When we cover religious issues, rather than debating the existence of God or creationism vs evolution for the thousandth time, we often focus on topics related to the psychology & sociology of religion, or we look at the ways in which the frontiers of physics can inform metaphysical speculation.
If this sounds interesting to you, we hope you'll join us!
Upcoming events (3)
See all- Braver Angels Debate: "RFK Jr. & Healthcare"Link visible for attendees
Debate Topic:
Resolved: "Robert F. Kennedy Jr. will advance the health of the American people."About this Event:
The US has poorer health and shorter life expectancy than most other high-income countries, beginning at birth and extending across childhood and adult life. How can healthcare and health outcomes in the United States be improved?Robert Kennedy Jr. and the "Make America Healthy Again" (MAHA) movement believe they know how, and many Americans agree with them. They suggest, for example, we eliminate contaminated and ultraprocessed foods, fight back against the profit-driven Pharma and medical industry that depends on sick Americans, and consider alternative and holistic approaches.
Other Americans believe that Kennedy and MAHA are promoting anti-scientific “wellness”, untruths and conspiracy theories. They argue that RFK Jr. and MAHA are ignoring the benefits of existing scientific discoveries and treatments, and giving short shrift to more significant priorities and inequities impacting health: food and housing insecurity, poor access to medical care, smoking, and firearms, among others.
With trust in public health and medical care the lowest it has been in decades, we Americans have to decide whom we believe and whom we trust—with our lives and our children’s lives.Join Braver Angels Thurs July 31 @ 8 pm EDT. We want to hear what YOU believe in our debate on the topic – Resolved: Robert F. Kennedy Jr. will advance the health of the American people.
Come join us for this free national debate, in which all participants from across the ideological spectrum will have an opportunity to speak and ask their questions. Tell us what you have experienced and what you think.
Register on the Eventbrite page and the Zoom link will be emailed to you a couple of days prior to the event. Keep an eye out!
Questions? Email debates@braverangels.org.Registering for the Online Debate:
This is a FREE event; however, you will need to register for it. Go to the following Eventbrite link & fill out the registration form:
https://www.eventbrite.com/e/national-debate-rfk-jr-health-registration-1404995552519?discount=BRAVERRegistration for this debate will be closed 12 hours prior to the scheduled starting time. Check your email for the confirmation message with the Zoom link - if you don't see it, check your "Junk" folder.
- Note: Braver Angels events may be recorded, and may be shared with media or used in Braver Angels publications, including web pages. Participants who object to this may disable their video.
What is "Braver Angels"?
Formerly known as "Better Angels", Braver Angels is an organization founded in 2016 to depolarize American politics through grassroots organizing. They do this primarily by hosting events for cross-partisan dialogue & civil debate. To learn more, go to https://braverangels.org/About Braver Angels debates:
You probably haven’t experienced anything like a Braver Angels Debate. This is a highly structured conversation in which a group of people think together, listen carefully to one another, and allow themselves to be touched and perhaps changed by each other’s ideas.
To learn more about our debates, you can view this video of a sample debate (it lasts about 15 minutes). For more information, to find upcoming events or view recordings of some of our past debates please visit: https://braverangels.org/what-we-do/debates/. - Commonwealth Club Event: "The Simulation Hypothesis"Link visible for attendees
Join the Commonwealth Club of California on Wednesday, Aug. 13, 2025 to hear Rizwan Virk discuss his new book, The Simulation Hypothesis: An MIT Computer Scientist Shows Why AI, Quantum Physics, and Eastern Mystics All Agree We Are in a Video Game.
HOW TO WATCH:
This event is $10 for online tickets, and you must register at the link below, at which point you'll be emailed a link to the online event - https://commonwealthclub.my.salesforce-sites.com/ticket/#/instances/a0FVb000006Vc0jMACNOTE: This event is free for members of the Commonwealth Club of California. Membership costs just $10/month and you can cancel at any time. To become a member, go to: https://www.commonwealthclub.org/membership
EVENT DESCRIPTION:
Are we living in the Matrix?Rizwan Virk is a leading authority on simulation theory, and he says the evolution of our video games, including virtual reality, augmented reality, artificial intelligence, and quantum computing, will lead us to a technological singularity. We will reach the simulation point, he argues, where we can develop all-encompassing virtual worlds like the OASIS in Ready Player One or The Matrix—and in fact we are already likely inside such a simulation.
Though that sounds like science fiction, many scientists, engineers, and professors have given the simulation hypothesis serious consideration, including Elon Musk, Neil deGrasse Tyson, and Nick Bostrom. But philosophers of many traditions have long contended that we are living in some kind of “illusion” and that there are other realities that we can access with our minds.
Virk's work in Silicon Valley as a video game designer caused him to wonder where our technology would take us and how long it would take us to create something like the world of The Matrix—and why he’s now 70 percent certain that we’re already inside a simulation.
Whether you are a computer scientist, a fan of science fiction like the Matrix movies, a video game enthusiast, a spiritual seeker, or simply a fan of mind-bending thought experiments, come hear Virk for yourself and you might never look at the world the same way again.
ABOUT THE SPEAKERS:
- Rizwan Virk is an MIT computer scientist, leading video game pioneer, entrepreneur, film producer, venture capitalist, professor, and a founder of Play Labs at MIT.
- Dean Takahashi, the moderator, is the business journalist and author specialized in the tech and video game industries, best known as the Editorial Director for GamesBeat.
ABOUT THE EVENT HOST:
The Commonwealth Club of California is the nation's oldest and largest public affairs forum. Every year, they present more than 450 forums on topics ranging across politics, culture, society and the economy. Their stated mission is to be the leading national forum open to all for the impartial discussion of public issues important to the membership, community and nation. To learn more, go to: https://www.commonwealthclub.org/who-we-are
..................................................................................................................................................................................................................... - Commonwealth Club Event: "How to Spot Deepfakes & Fight AI-Powered Fraud"Link visible for attendees
Join the Commonwealth Club of California on Wednesday, Aug. 13, 2025 to hear UC Berkeley’s Hany Farid discuss "How to Spot Deepfakes and Fight AI-Powered Fraud."
HOW TO WATCH:
This event is $10 for online tickets, and you must register at the link below, at which point you'll be emailed a link to the online event - https://commonwealthclub.my.salesforce-sites.com/ticket/#/instances/a0FVb000005xAuvMAENOTE: This event is free for members of the Commonwealth Club of California. Membership costs just $10/month and you can cancel at any time. To become a member, go to: https://www.commonwealthclub.org/membership
EVENT DESCRIPTION:
Deepfakes—AI-altered images, video, or audio, often used to impersonate real people—have become commonplace in recent years. In 2023, a Hong Kong employee of a multinational company transferred $25 million to fraudsters’ bank accounts after they used the technology to pose as the company’s chief financial officer on a video call. And during Russia’s invasion of Ukraine, a fake video of President Zelenskyy surfaced, showing him urging Ukrainian soldiers to surrender. Meanwhile, phony but convincing videos of public figures, from the Pope to Tom Cruise, are flooding the internet.President Trump signed legislation in May aimed at fighting some of the worst abuses, but critics say it is too vague and could be used to justify censorship. UC Berkeley professor Hany Farid, one of the world’s leading experts on digitally manipulated images, joins us to talk about the threat of deepfakes... and how AI is now being used to detect them.
ABOUT THE SPEAKERS:
- Hany Farid is a Professor at the UC Berkeley’s Schools of Information and Electrical Engineering and Computer Sciences, as well as Cofounder & Chief Science Officer of GetReal Security which develops techniques to detect manipulated media.
- Jacob Ward, the moderator, is a tech journalist and founder of The Rip Current.
ABOUT THE EVENT HOST:
The Commonwealth Club of California is the nation's oldest and largest public affairs forum. Every year, they present more than 450 forums on topics ranging across politics, culture, society and the economy. Their stated mission is to be the leading national forum open to all for the impartial discussion of public issues important to the membership, community and nation. To learn more, go to: https://www.commonwealthclub.org/who-we-are
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