Mathematics

[Profs and Pints DC](https://www.profsandpints.com/washingtondc) presents: **“Our Bodies, Our Minds,”** an exploration of the relationship between our biology and our thought processes, with Justin Brooks, M.D., associate professor of computer science and electrical engineering at University of Maryland, Baltimore County and scholar of computational psychophysiology. [Advance tickets: $13.50 plus sales tax and processing fees. Available at h[ttps://www.ticketleap.events/tickets/profsandpints/dc-bodies-minds](ttps://www.ticketleap.events/tickets/profsandpints/dc-bodies-minds) .] For millennia, humans have wondered how mind and body are connected. Are our thoughts just the electrical murmurs of nerve cells, or is there something more? Are they the result of millions of years of evolution? Explore the mind-body problem through the lens of measurable physiology with Dr. Justin Brooks, a physician-scientist whose research focuses on using mobile and wearable technologies to understand, predict, and influence human behavior and health. He’ll describe how millions of years of evolution shaped the way our minds and bodies speak to each other, with our nervous system being the product of countless adaptations that shape how we react, think, and survive. Reflexes hidden in our physiology, attention, and mental effort reveal a “biotype,” a stable but adaptable signature of how we process the world. The problem is that reflexes honed by a prehistoric world of predators and scarcity now must navigate the strange demands of a modern society. Rather than mirroring who we truly are, our reflexes often are just echoes of ancient survival needs. As a result, many of us live slightly out of sync with our own biology. We think faster than we feel, ignore our body’s quiet warnings, and misread the signals from our bodies that guide balance and well-being. Breakdowns in the conversation between mind and body cause stress to accumulate, performance to falters, and health to erode. In a talk that blends neuroscience, physiology, and philosophy, Dr. Brooks will discuss how our specific biotypes might hold clues for realigning our ancient wiring with the pace of contemporary life to avoid the pitfalls of burnout, chronic stress, and mental fatigue. He’ll explore how measuring the body can illuminate the mind and how both can be brought back into harmony for the world we live in now. (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: Part of an illustration of the brain in Traité complet de l'anatomie de l'homme, a textbook completed by anatomist Jean-Baptiste Marc Bourgery and artist Nicolas Henri Jacob in 1854.

Think you aren't flexible enough for yoga? Afraid to get onto the floor? Living with physical aches or restricted range of motion? Then this is the perfect yoga class for you! Explore your body's strengths in a fun, supportive environment while maintaining and growing your range of motion, flexibility, balance, strength, and sense of peace. All are welcome in this therapeutic class. Come ready to try new things, laugh, ask questions, and support each other. **Please reserve your spot at www.piesfitnessyoga.com**. The session is offered both InStudio and OnLine. The Zoom link for the OnLine session will be emailed 15 minutes before class starts to those who are registered at www.piesfitnessyoga.com. **Sign up for sessions must be made at least 2 hours prior to class.** The address is 1322 Prince St Alexandria, VA 22314 Our entrance is located on the side of the building, parallel to West St. **Street parking is available and additional parking is located at Shiloh Baptist church, spaces 36,37,38,39.** The church is located across the street from the studio, on the corner of Duke St. and West St. Discount is available to seniors, teachers, students, emergency responders, and military. All can save by purchasing class packs.

​Join Data Visualization DC for a meetup to learn about the 30 day chart challenge and some tips and tricks for rapid, high volume data visualization practices! Doors 5:30 Presentation starts 6:15 Please RSVP on [Luma ](https://luma.com/wggc3w3p?utm_source=meetup)for headcount purposes! #=#=#=#=#=#=#=# Got Data Viz? Sign up for a viz and tell and share your work for a few minutes. All are welcome! [https://forms.gle/9a3ssbVbwQFjpWdY8](https://forms.gle/9a3ssbVbwQFjpWdY8) Data Viz DC is a member of Data Community DC, a nonprofit dedicated to data education in the nation's capital. Learn more at [www.dc2.org](http://www.dc2.org/)

Trail Mix: Worship on the Move on the W&OD Trail Tuesdays \| 6PM \| Meet at the Picnic Tables @ Vine \(2501 Gallows Rd\) Step out onto the W&OD Trail for a unique worship experience that blends scripture, prayer, movement, and creation. Walk, jog, or run at your own pace as we encounter God outdoors—and share trail mix together when we return. All are welcome. Come ready to move, breathe, pray, and be surprised by the Spirit. thevineva.org

Come the whole time or if you just spend 30 minutes. All are welcome. You are welcome and encouraged to bring your own coloring supplies but, if you don't have any, I will have plenty and am happy to share! (coloring books, colored pencils, and markers). Part of the mission of this group is to provide us an opportunity to check out AND SUPPORT local businesses. So, please don't bring any outside food/drinks and, while purchasing something isn't at all a REQUIREMENT to participate in the event, I do strongly encourage you to try something from the vendor :) I look forward to seeing and meeting you there! ***\*\*DISCLAIMER*\*\*** Photos may be taken during the event to be shared here on Meetup so feel free to let me know if you'd like to be excluded from them.

**Life** Blaise Pascal was born in 1623 in the Auvergne region of France. His father was an expert mathematician and member of the *noblesse de robe* (a designation for high-level bureaucrats). His mother died when Pascal was only three. Under his father’s anti-scholastic and modern approach, Pascal read widely but idiosyncratically in law, the Bible, Church Fathers, science, and, eventually, mathematics—but relatively little in literature. By his teens, his father had introduced Pascal to the group of intellectuals associated with Père Marin Mersenne. He suffered medical issues from a young age and throughout his life and was for some time under the care of one of his sisters. He was, for example, too ill personally to conduct his famous experiment on Puy-de-Dôme that provided evidence that air pressure differs at different elevations. He had a deeply mystical or religious experience (“Night of Fire”) on the evening of November 23, 1654, after which he renounced his mathematical and scientific pursuits in favor of religious pursuits. He had notes from the Night of Fire sown into his jacket. He died at only 39 in 1662. **Themes** While Pascal did not invent the triangle named for him (it had been known not only to Chinese, Indian, and Islamic scholars but also European ones), he studied it and showed some of its properties. In physics, he did experiments with mercury demonstrating that air pressure varied with elevation and studied hydraulics, giving us what is now called Pascal’s law. He was one of the first to devise a working calculating machine, several of which still exist, creating three versions for different uses. As might be expected from someone of such evident skill in math and science, he did not care much for Aristotelian approaches, such as essences, form, and matter. Pascal as philosopher presents some problems. In the first place, his non-scientific writings had the avowed purpose of promoting Christianity and, at times, Jansenism. His most famous work, *Pensées*, was not published in his lifetime but rather arranged by family and associates after his death based on written notes supposedly but not definitively intended for a work of Christian apologetics. But the psychological insights of the Pensées, and its clear and sharp style, have perhaps against his own wishes established Pascal as some sort of philosopher, if not a proto-(Christian) Existentialist. His attacks on the power and utility of reason are ironically almost coeval with the start of the European Enlightenment. Among his more famous ideas is that the heart has its reasons that the mind knows not of and discussing belief in God in terms of a wager. Is Pascal’s Wager a joke, taking to humorous extremes techniques of probability he had had a hand in developing? Or is he serious, aiming to show that reason fails when it comes to life’s most consequential decisions? Or is the Wager meant to offer reasoned support for a prior, non-rational embrace of God? We’ll discuss these and other questions to try to understand Pascal’s contributions to philosophy and what insights he can offer today. **Reading** Our readings for this month are *Pensées* and selections from *Discussion with Monsieur de Sacy*, the *Art of Persuasion,* and *Writings on Grace*. These can all be found in an edition from [Oxford University Press](https://global.oup.com/academic/product/penses-and-other-writings-9780199540365?cc=us&lang=en&). **Optional** * [Blasie Pascal, Internet Encyclopedia of Philosophy](https://iep.utm.edu/pascal-b/) * [Pascal's Wager, Stanford Encyclopedia of Philosophy](https://plato.stanford.edu/entries/pascal-wager/) * [Lettres Provinciales, Wikisource](https://en.wikisource.org/wiki/Lettres_Provinciales) * [Prayer, to Ask of God the Proper Use of Sickness, Wikisource](https://en.wikisource.org/wiki/Blaise_Pascal/Prayer,_to_Ask_of_God_the_Proper_Use_of_Sickness) **References for Pascal's Contributions to Math and Science** * [Pascal's Triangle: What It Is and How to Use It, Science Notes](https://sciencenotes.org/pascals-triangle/) * [Pascaline (Calculator), Wikipedia](https://en.wikipedia.org/wiki/Pascaline) * [Pascal's Law, Wikipedia](https://en.wikipedia.org/wiki/Pascal%27s_law) * [Pascal's Theorem (Geometry), Wikipedia](https://en.wikipedia.org/wiki/Pascal%27s_theorem)

9. Northern Songs /291 end p. 332. 41 pages.

Title: An Easy Intro to Feynman's Quantum ElectroDynamics (QED) Summary: One of the most delightful and informative physics books ever written is Richard Feynman’s QED. In this short book, Feynman undertook the daunting task of explaining his Nobel-Prize-winning theory, Quantum ElectroDynamics, without any math except in a few elaborating footnotes. Remarkably, he succeeds! In this talk, Terry replicates many of his arguments to show how you, too, can understand one of the most fundamental mechanisms of physical reality by using not much more than lots of tiny one-hand clock dials moving through space. Speaker: Terry Bollinger is a computer scientist Speaker: Terry Bollinger is a computer scientist with BS, MS and Professional degrees from the Missouri University of Science and Technology.

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**\*\*Please note this event is in-person only.\*\* We have limited space, please do not RSVP if you are not planning on joining us in person in D.C. at SEI.** The villainous **Lord Taart Chart** has emerged from the shadows once again, and he’s targeting your data! In a brazen attack, he’s stolen your carefully curated data and locked it deep inside his fortified **Azure Vault**. **Your Mission:** You and your team must rise to the challenge, confronting Lord Taart Chart’s wicked ways by solving his **10 Power Query Puzzles**. These devious challenges will test your ability to wrangle, transform, and tame even the messiest of data. Join us at SEI for a reprise of our most popular session from Power BI Days DC 2025, a fiendishly tricky collaborative game developed by our very own John Kerski. In March, Lord Taart Chart will hit the road for his first ever appearance on the national stage at FabCon Atlanta.

Details Location: Crimson Whiskey Bar (Downstairs Bar, Not Rooftop) The purpose of Thinkers and Drinkers is to facilitate casual but meaningful and interesting conversations with other people in a face-to-face setting. The topics cover a wide variety of issues and are different for every meeting. While conversations may get heated at times, we ask that all members be respectful of each other and refrain from personal insults. Topic: Trust in Institutions Across much of the world, trust in major institutions, including government, media, corporations, courts, universities, and science, appears to be shifting. Surveys often show declining confidence in public institutions, while at the same time people continue to rely on them for stability, information, and coordination. Recent years have included disputed elections, misinformation concerns, public health crises, economic disruptions, and rapid technological change. These events have raised difficult questions about credibility, legitimacy, and accountability. Some argue that skepticism toward institutions is healthy in a democracy, encouraging transparency and reform. Others worry that widespread distrust can weaken social cohesion and make collective problem solving nearly impossible. Major surveys and studies on institutional trust include: • Pew Research Center, Public Trust in Government: https://www.pewresearch.org/politics/2024/04/30/public-trust-in-government-1958-2024/ • Edelman Trust Barometer (annual global survey): https://www.edelman.com/trust/trust-barometer • Gallup, Confidence in Institutions: https://news.gallup.com/poll/1597/confidence-institutions.aspx • World Values Survey, Trust indicators across countries: https://www.worldvaluessurvey.org Historically, periods of low institutional trust have sometimes preceded major reforms or political realignments, while in other cases they have contributed to instability or authoritarian backlash. Understanding when distrust is justified, and when it becomes dangerous, remains an open question. Questions to Consider • What factors most strongly shape trust in institutions, performance, transparency, shared identity, or something else? • Is declining trust primarily a problem, or can it be a healthy corrective? • Are some institutions, such as courts, science, or local government, more deserving of baseline trust than others? • How should societies respond when large portions of the public lose faith in elections, media, or public health guidance? • Can trust be rebuilt once it is lost, and if so, how? • Does technology, especially social media and AI, strengthen or weaken institutional legitimacy?

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Satanic Panics,”** a look at waves of fear of demonic activity as an American tradition, with Luxx Mishou, cultural historian and former instructor at the U.S. Naval Academy and area community colleges. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-satanic-panics2](https://events.ticketleap.com/tickets/profsandpints/nv-satanic-panics2) .] The 1980s found the United States gripped by fear of Satanic cults targeting children. They were believed to be corrupting young ones in daycare centers and tempting teens through subliminal messages on heavy metal albums or through the quiet inclusion of demonic rituals in role-playing games. Satanic serial killers supposedly stalked the suburbs. Doctors helped patients uncover what were claimed to be repressed memories of ritualistic satanic abuse. Parents, police, and politicians were urged to protect impressionable youths from both moral and physical danger. With Satanic cults deemed to be a real and material threat, it was a frightening time for everyone, including those who suddenly came under suspicion for doing evil deeds. Then, suddenly, it all faded from public consciousness, just as surely as did eighties fads such mullet haircuts, leg warmers, and Cabbage Patch Kids. Why did it all start? Why did it stop? And has this happened before or since? Hear such questions tackled by Luxx Mishou, a cultural historian and media specialist who has long researched the devious and villainous in cultural artifacts. She’ll discuss moral panics as a longstanding cultural tradition, with each new one stemming from fear of cultural shifts and shaped by the time and place where it occurred. Among the panics we’ll look into are the Red Scare of the 1950s and the public response to the gruesome 1969 murders committed by the Manson Family. Delving into the 1980s panic, Mishou will describe how it began with the 1980 publication of psychiatrist Lawrence Pazder’s memoir *Michelle Remembers*, detailing the suppressed memories of ritualistic abuse reportedly suffered by a patient. As that book quickly became a best seller, its ideas saturated American culture. A California daycare center became the focus of a three-year investigation, followed by three years of trials, based on allegations that its owner had engaged in secret ritualistic abuse of the children in its care. Mishou will lead you through the media that convinced the public that devil worshipers were among them, and she’ll talk about how reactions to imagined threats can have very real social costs. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image by Canva.

**Leave behind the rushed pace of traditional speed dating and embrace a more relaxed approach to meeting new people, facilitated by a [Dating Coach](https://lovedandfulfilled.com/) with prepared Conversation Icebreakers.** **💕** All ages! 💕Different sections for different age groups. Must[ ](https://www.eventbrite.com/e/1657502206719?aff=oddtdtcreator)**[RSVP HERE](https://www.eventbrite.com/e/1981447001320?aff=oddtdtcreator)** (Event is posted on multiple platforms, attendees displayed here doesn't reflect the actual number) * Easy going greet and meet to socially warm up * Prepared questions to facilitate meaningful conversations to assess compatibility * Engaging discussions in small groups * Opportunity to talk to every single person present * Stress free matchmaking by the coach after the event (no need to ask for contact info on the spot, you will get it after the event) Whether you are an introvert or an extravert, welcoming and easy-going environment is guaranteed. You won't have to sweat the small talk, and event will be structured and organized to make connecting effortless. **Cost:** $35 (Pay through[ ](https://www.eventbrite.com/e/1299434316019?aff=oddtdtcreator)**[Eventbrite](https://www.eventbrite.com/e/1981447001320?aff=oddtdtcreator)**[ ](https://www.eventbrite.com/e/1972845805913?aff=oddtdtcreator)or **Venmo** to @Irena-Polyakova (1469)-include your email address if using Venmo) **Location**: Uncle Jalapeno Restaurant in Herndon, VA **Time**: 3:00 pm \~ Irena

What's better than brunch? Brunch with the LGBTQ+ community, of course! Join the Dulles Triangles at 11:00 AM for a dazzling brunch at **[Amphora Diner](http://amphoragroup.com/amphoras-diner-deluxe/)**, located at **1151 Elden St, Herndon, VA 20170**. This is your chance to catch up with old pals, make some new ones, and bask in the glory of a Sunday well-brunched! Amphora’s menu is as diverse as our community, offering everything from omelets and pancakes to divine bakery treats. Seriously, their pastries are more irresistible than a shirtless Ryan Gosling holding a puppy! **RSVP Required!** Amphora needs a headcount beforehand, and adding seats at the last minute is like trying to squeeze into last year’s pride outfit—tricky! To ensure you get a seat at the brunch extravaganza, RSVP on Meetup or in the Dulles Triangles Facebook group by the day before. Those who RSVP get priority seating, and we promise not to judge if you show up in sequins. Remember to ask for Dulles Triangles when you arrive. Use the links below to RSVP and secure your spot faster than you can say "mimosas." This event is usually held on the first Sunday of each month, but check for updates because we like to keep things as flexible as our dance moves. Keep an eye on the current schedule so you don't miss out!

Can’t make it out in person? Join your **DTs friends** for our Weekly Virtual Happy Hour — a relaxed, welcoming space to unwind, chat, and connect from wherever you are. Whether you’re catching up with familiar faces or meeting new people for the first time, Virtual Happy Hour is all about easy conversation, shared laughs, and low-pressure connection. Bring your favorite drink, get comfortable, and drop in when you can. ✨ **No RSVP needed. Just click the link and join.** Come relax, connect, and **find your tribe** with DTs — from anywhere. 💙💻 Join in via Google Meet: [https://meet.google.com/jvc-ajhk-vci](https://meet.google.com/jvc-ajhk-vci)

Dave & Dan will be at Finnegan's Grill & Irish Pub, 44050 Ashburn Village Blvd., Ashburn, VA 20147 at 6 pm to grab a bite to eat and then trivia begins at 7 pm sharp. We've been getting good turnout, and look forward to seeing you there!