Information Retrieval

Hey Poetry Lovers! This group is on a roll. Here’s the gist: We meet at the **Capital One Café in Chinatown** from **12pm - 2pm** every other week. For enrichment, we start by reading and reflecting on a **“published poem”**, suggested by someone in the group. No advance preparation is necessary. But feel free to check out some of the poems we’ve read [here](https://docs.google.com/spreadsheets/d/e/2PACX-1vSyE_wCLQCPHRrKmN5F9tOIeeRQUZESxjRXGVBoCF2uU8Gm0_d0uECiCBCQXEy6ksxfsBOhtRIOpW3T/pubhtml?gid=0&single=true&widget=true&headers=false%22%3E%3C/iframe%3E). Or submit suggestions for future meetings [here](https://docs.google.com/forms/d/e/1FAIpQLSexGc2Z2Kp6bZW0D3_hfJ7NUUkfNHf7TXX-43FglCeBd9EF2Q/viewform?usp=send_form). Next, we **share our work and offer feedback**. Depending on attendance, everyone gets \~10 minutes to use as they like. (No need to share, though; you’re welcome to come even if you prefer just to listen.) We maintain a **Discord server** to help share our work and communicate outside our bi-weekly meet-ups. If you haven’t used Discord before, take a moment to download it and create an account before arriving. When we meet you on Saturday, we will add you to our server, the “DC Poetry Workshop”, and can help you navigate the app if you have questions. Finally, if you plan on sharing a poem, consider how you will do so. Some options include: * Print 5-10 copies to distribute in person * Take and share screenshots in the Discord chat. * Copy the poem into a google doc, change sharing settings to “anyone with link”, and copy the google doc link into the Discord chat. Most importantly, we’re excited to meet you! Catch you on Saturday, Diego / Ian / Cayden / Nate / Otasha / Lia / An

* We meet inside Compass Coffee. * Details on parking below. * Bring something to read, as we often take some time at the beginning telling each other about what we're currently reading. * I have a favor to ask of you. To offset the cost of Meetup fees (\~$200 a year), I kindly request that you consider a small donation to my my [Pledge account](https://www.meetup.com/a-different-type-of-book-club-arlington/#pledge). 😊 **NOTE: NO DISCUSSION OF POLITICS: 12/31/21 UPDATE** For the sake of polite company, moving forward, we will avoid the discussion of politics at meetings of the book club. Please let me know if you have any questions. **PARKING** On Saturdays and Sundays, parking is free on 16th Street N. (near Hillside Park, 1601 N. Pierce Street, Arlington, Va.), and also on the adjacent N. Pierce Street (between Clarendon Blvd. and Fairfax Dr.). Likewise, on weekends, parking on N. Queen Street (between Clarendon Blvd. and Fairfax Dr.) is free. **NON-ATTENDANCE / NO-SHOW POLICY** If you have said that you will attend this event, but no longer are able to attend, please kindly update your status to "Not Attending" so that someone on the waitlist is able to RSVP. **Because this Meetup group is popular, and typically has a waitlist, effective immediately, I'm instituting a two-event no-show policy. If you RSVP as "Attending" but do not show at two events, you will be removed from this Meetup group.** We look forward to seeing you! Best, Jay

Let's return to world of Pandora for the third installment of the Avatar series.

Date : Dec 20 2025 13:00 - 15:00 EST Title: Why Classical Physics Could Not Unify Gravity: The Missing Density Constant Summary: Classical physics divides nature into two regimes: a quantum world governed by the Planck constant h, and a gravitational world governed by the Newtonian constant G. Despite one century of effort, the two regimes remain formally incompatible because neither framework contains a parameter that characterizes the density of space itself. In this paper, I argue that a fundamental density scale—denoted \mu_g—is logically necessary for any unified physical theory. Building on recent geometric models where space evolves as a helical motion, I show that the familiar constants G, \hbar, and c correspond to radial, torsional, and axial components of the same geometric motion. From this perspective, h cannot serve as the universal constant of unification because it measures action, not density. The density constant \mu_g provides the missing bridge: it allows gravitational coupling to be expressed as a property of space itself and reveals that the quantum constant \hbar is also a geometric quantity, proportional to \mu_g c \ell_\Omega^2. This analysis explains why classical and quantum physics have remained disjoint: both lack the necessary density scale. I conclude by proposing that \mu_g is not an additional assumption but a fundamental property of space that any geometric unified field theory must incorporate. References to the prior geometric theory by Zhang Xiangqian and Xu Yuchuan are included to situate this work within the emerging framework of helical-space physics. Speaker: Lynn Lou Beran is a Senior IT Security Analyst and an author, translator, and editor working at the intersection of science, engineering, and communication. She translated and edited multiple editions of Zhang XiangQian’s Unified Field Theory and co-authored recent manuscripts developing a geometric, motion-based view of physical reality. Lynn’s broader work focuses on making advanced ideas accessible without sacrificing rigor, and on connecting conceptual insight to testable predictions and practical tools. Note: This is an online event. The Zoom registration form will be provided no later than one hour prior to the event start time.

# Meet in or near the visitor parking lot at the office, near the Veterans Memorial area. # Bring: 1) yourself 2) if you are so inclined, the Find a Grave app (Ancestry.com) on your phone 3) any desired protection from sun and other natural elements # Agenda: 1) Casually attempt to fulfill at least one open photo request on the Find a Grave app and discuss associated strategies. 2) Enjoy the ambience, weather, nature and any assembled company. Note: If weather is heavily inclement or unsafe (torrential downpour, storms, etc.), the event will be rescheduled. Summary of last event: Four attended. No memorials were located/photographed for the app. Crows and fall foliage were observed, and nice weather and company was enjoyed! Some interesting headstone engravings and memorials were discovered.

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **This is a curated, small-group meetup make new friends in Washington.** Each meetup brings together 4–6 like-minded people for casual conversations over brunch. We use the Groupvibe platform to organize and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com](https://groupvibe.com) Once you register, and **buy a ticket or become a Groupvibe member**, we’ll share the exact location and match you with your group. **Why this works:** \* Smaller groups make real conversations easier \* Matching helps avoid awkward dynamics **Note:** RSVPs here on Meetup don’t reflect total attendance. Many attendees register directly via our website. This meetup is organized by **Groupvibe**, a small team passionate about helping people form meaningful friendships offline.

**Join us in Falls Church for conversations that go beyond small talk.** Higher Grounds – Falls Church is where this growing network of gatherings began: a space for thoughtful, authentic dialogue about what matters most. Whether we’re exploring the nature of happiness, the challenges and possibilities of midlife, spirituality, culture, capitalism, parenting, or the role of art and travel in a meaningful life, every conversation is shaped by the people in the room. There’s no set leader or rigid agenda—just a shared commitment to listen as much as we speak. We start with brief introductions focused on what makes you *you* (not your LinkedIn bio), then dive straight into whatever is on people’s minds. The direction of each meetup emerges organically, making every event unique. Come ready to share, reflect, and connect with others in Falls Church who are also seeking deeper conversations. **Suggested Questions: Life Stages & Transitions** 1. What did you think you'd have figured out by now that you're still completely winging? 2. When did you realize your parents' advice was for a world that no longer exists? 3. What are you finally old enough to stop pretending to care about? **Suggested Questions: Identity After the Roles** 1. Who are you when nobody needs anything from you? 2. What dream keeps resurfacing even though the "practical" time has passed? 3. How do you handle having the freedom you always said you wanted? **Suggested Questions: AI & Being Human** 1. What human experiences will AI never truly understand? 2. If machines handled all your have-to's, what would you actually do? 3. What becomes more precious as everything becomes automated? **Suggested Questions: Belief & Meaning** 1. What certainties have you given up, and what rushed in to fill that space? 2. How has knowing someone who died changed how you live? 3. What do you believe now that would shock your younger self? **Suggested Questions: The Modern Psyche** 1. What anxiety do you carry that previous generations didn't have? 2. Which of your survival strategies are you ready to retire? 3. What uncomfortable truth about happiness did it take you years to accept? **Suggested Questions: Work & Purpose** 1. When did you stop believing that your job would complete you? 2. What would you do for work if money and status weren't factors? 3. How has your definition of "making it" changed over the years? **Suggested Questions: Relationships & Connection** 1. What relationship dynamic do you keep recreating, and why? 2. When did you realize your parents were just people trying their best? 3. What kind of loneliness doesn't go away even when you're with others? **Suggested Questions: Time & Mortality** 1. What are you running out of time to say or do? 2. How differently do you spend your time knowing it's finite? 3. What will you regret not trying, even if you fail? **Suggested Questions: Society & Culture** 1. What social convention do you follow even though it makes no sense? 2. Which generation do you understand least, and what might you be missing? 3. What aspect of how we live now will seem insane in 20 years? **Suggested Questions: Personal Philosophy** 1. What rule for life did you create after learning something the hard way? 2. When did you stop believing that everyone else had it figured out? • 3. What paradox about life have you learned to live with?

📚 Do you love reading, but wish you had a structure and a community to share your insights with? Join our small circle of curious minds (just 4 members per gathering) as we come together for an hour of focused reading—in the calm setting of a library or the cozy atmosphere of a café. Here’s how it works: First part: Quiet reading on your own—bring a book you’re exploring, whether it’s philosophy, history, psychology, literature, or anything meaningful to you. Second part: We regroup and each person shares key takeaways, insights, or questions sparked by their reading. This sparks a structured yet free-flowing conversation around ideas, perspectives, and personal reflections. Why join? Add structure to your reading habit. Discover new books, authors, and ideas through others’ choices. Build real connections by sharing and listening deeply. Socialize around something meaningful instead of small talk.

Use Promo code FALLME to receive $5.00 off! Purchase tickets here: [https://www.prosinthecity.com/event/speed-dating-washington-dc-16032](https://www.prosinthecity.com/event/speed-dating-washington-dc-15393) Tonight, Professionals in the City is hosting an event for singles in their 30s and 40s. Our Speed Dating Washington DC events are among our most popular singles events so don't miss out! During Speed Dating Washington DC you'll date for approximately one hour, meeting smart and intriguing members of the opposite sex as you spend a few minutes with each new acquaintance. Meet singles and know right away whom you mutually match with. After the speed dating, join us for a night of socializing and more interactions. You’ll also be able to spend time with someone you felt you clicked with during one of your speed dates. There will be a cash bar for this eventful evening, so come and meet other single professionals like yourself and have the time of your life! Then, after the event, use our exclusive online system from home to choose your matches from the people you met at the event. Without disclosing your email address, you'll be able to send messages through our system to anyone who attended. So come to Speed Dating Washington DC and meet that special someone you’ve been looking for. Check in is at 7:00 and the dating begins at 7:20. Please check in at 7:00 so you have a chance to mix and mingle before the dating begins. Numbers are limited at this event so sign up soon!

We will meet outside as long as the weather is nice. If not, we will move inside. Look out for a comment the morning of each meeting with our exact location. As we are meeting in person, please remember to bring something to read as we usually spend some time sharing our current reads and/or reading when meeting in person. As a reminder, there is no assigned reading; please bring whatever you are currently working on. This group is super casual, sometimes we read and sometimes we talk the whole time. **** NO SHOW POLICY: Due to the high number of members on the waitlist recently we are having to reinstate our no-show policy. If you sign up and no-show to 2 events you will be removed from the group. Reminders are provided weekly to change your RSVP to allow those on the waitlist a chance to come to the meet-up, no 3rd chances with be given. Please be considerate to your fellow members. Thank you! I look forward to reading you!

**Life** Gottfried Wilhelm Leibniz was born in 1646 in Leipzig. He had access to a substantial library early in life and is said to have taught himself Latin to read the Church Fathers and Latin Classics. He attended universities in Leipzig and Altdorf, earned a doctorate in law in 1667, turned down a faculty position, and went to work for the Elector of Mainz. In 1672 he had the opportunity to visit Paris to discuss his Egypt Plan, in which France would invade Egypt and leave Germany and the Netherlands alone. There he met several leading French thinkers, including [Nicolas Malebranche](https://www.britannica.com/biography/Nicolas-Malebranche) and [Antoine Arnauld](https://iep.utm.edu/antoine-arnauld/), and studied mathematics under [Christian Huygens](https://www.britannica.com/biography/Christiaan-Huygens) (discovering integral and differential calculus after about three years). He created a calculating machine and, based on this work, was made in 1673 a member of the Royal Society. In 1676 he began working in the court of the Duke of Hanover. He spent much of his life promoting science, libraries and learning and was the first president of the [Royal Prussian Academy of Sciences](https://en.wikipedia.org/wiki/Prussian_Academy_of_Sciences). Leibniz made contributions to not only mathematics but physics, theology, and philosophy. He sought to reconcile Catholicism and Lutheranism and, in his own way, modern science and philosophy to certain Aristotelian ideas, such as the substantial form and final cause. He died in Hanover in 1716. **Themes** Leibniz is regarded, along with Descartes and Spinoza, as one of the most important rationalist philosophers of his age. He wrote a work in response to John Locke arguing that some principles or ideas are in some sense innate. In metaphysics, he asserted the principle of sufficient reason, which says that things happen when there is more reason for them to happen than not, and claimed that, strictly speaking, all true statements are analytic (e.g., it can be truly predicated of Ceasar *a priori* that he crossed the Rubicon). Unhappy with atomistic and other accounts of substance, he argued that monads (dimensionless, soul-like entities) are fundamental, reflect everything that has ever happened or will happen, and are in sync with each other through a pre-established order chosen by God. From the conclusion that God has chosen this world, and that God can only choose the best, Leibniz famously claimed that this is the best of all possible worlds. The system Leibniz set up would seem to leave little room for human freedom, but he tried to argue that people were nonetheless free in some sense. Right or wrong, his views are complex and interesting. **Works and This Month's Reading** Leibniz wrote so much that the critical edition of his collected works, underway for several decades, remains unfinished. Much of this output consists of short works—letters, journal articles—rather than a magnum opus. His only book-length statement of his philosophy published in his lifetime is *Theodicy*. His other major works include *Discourse on Metaphysics*, *Monadology*, and *New Essays on Human Understanding*. Except for *Monadology*, our readings this month are not from his most famous works; however, the selections in the *Shorter Leibniz Texts* are helpfully arranged, cover many of Leibniz's main claims, and, because the selections are short, can be read in coherent, manageable chunks. **Readings** · [The Shorter Leibniz Texts (Strickland)](https://www.amazon.com/Shorter-Leibniz-Texts-Collection-Translations/dp/0826489516/) · [Monadology (Google Books, pp. 215-271)](https://www.google.com/books/edition/The_Monadology_and_Other_Philosophical_W/0IARAAAAYAAJ?hl=en&gbpv=1) – The Strickland version listed below is a good alternative. Both have more footnotes and explanatory text than text from Leibniz. **Optional** · [Gottfried Wilhelm Leibniz, IEP](https://iep.utm.edu/leib-ove/) – Summarizes Leibniz’s thought based on *Discourse on Metaphysics*, *Monadology*, *Theodicy*, and *New Essays on Human Understanding*. · [Leibniz's Monadology: A New Translation and Guide (Strickland)](https://www.amazon.com/Leibnizs-Monadology-New-Translation-Guide/dp/074869322X/) – An alternative to the version on Google (above), this version also has relevant selections from *Theodicy*. · [Leibniz: Philosophical Essays](https://www.amazon.com/dp/0872200620/?) – Contains Discourse on *Metaphysics*, *Monadology*, the Preface to *New Essays on Human Understanding*, and several other short works and letters. · [The Philosophy of Spinoza & Leibniz (YouTube) - Magee & Quinton, 1987](https://www.youtube.com/watch?v=C7n7wfQOGaI) · [The Essence of Calculus (YouTube) - 3Blue1Brown](https://www.youtube.com/watch?v=WUvTyaaNkzM) \- Quick intro\. · [Mathematical Treasure: Leibniz's Papers on Calculus (MAA)](https://old.maa.org/press/periodicals/convergence/mathematical-treasure-leibnizs-papers-on-calculus) – If you’re curious what Leibniz’s calculus looked like. · [Mathematics - 19th Century, Algebra, Calculus | Britannica](https://www.britannica.com/science/mathematics/Mathematics-in-the-19th-century) – History of math, with some math.

We will be having an open discussion of the book "the Soul of an Octopus" by Sy Montgomery. [this is the amazon link for this book](https://a.co/d/1bRn8h4)

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Monday December 29th at 6PM we'll be meeting up dinner at the Pies & Pints at Easton. Feel free to bring guests. Sandwiches run about $15 and large pizzas run $20-30.

The December Ohio North Database Training user group meeting will be held on **January 6th, 2025 at 5:00PM**. This will be a **HYBRID** event and we will be joined online by **Jason Romans**. You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/l/meetup-join/19%3ameeting_N2Q3ODVjM2YtNDQ1NS00MDBjLWI5MzYtNDQ3YmFlZjkzMjAx%40thread.v2/0?context=%7b%22Tid%22%3a%22b966f302-6b93-4686-9041-c084635642c5%22%2c%22Oid%22%3a%2278c760cb-657f-46aa-bd2f-7066d9403bdb%22%7d)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Updates and announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract **Data on Fire: A Hands-On Intro to Spark in Fabric** Curious about Apache Spark but not sure where to start? This hands-on session introduces you to Spark in Microsoft Fabric Notebooks—a powerful and accessible way to process and analyze big data using familiar tools in the Microsoft ecosystem. We’ll break down key Spark concepts like distributed computing, DataFrames, and lazy evaluation, then show how they come to life inside Fabric’s notebook experience. You’ll see practical demos that cover loading, transforming, and analyzing large datasets—while leveraging Fabric’s modern data stack, including OneLake, Dataflows, and Pipelines. You’ll also learn how to choose between Spark and pure Python notebooks in Fabric, based on execution needs, data integration, and use case fit. Whether you're a SQL pro, BI developer, or data engineer, this session will give you the tools and confidence to start using Spark in your own projects—no cluster management required. \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.

$5 MOVIE NIGHT! With avatar fire and Ash, James Cameron takes audiences back to Pandora in an immersive new adventure with marine turned Navi leader Jake Sully. Navi Warrior, Naytiri and the Solly family. The film has a screenplay by James Cameron and Rick Jaffa and Amanda Silver. We will see the 6 PM showing and I will post my seat so that we can sit together. We can grab something to eat after if people want and chat to round out the experience. This is a MUST SEE MOVIE for me. I hope you feel the same. I will CANCEL if there are less than 5 RSVPs on the movie date.

**Start the new year with a Braver Angels gathering focused on speaking openly and listening deeply.** **In small, structured groups, each person will have five minutes to share a political or social issue that matters to them and why- no debate, no interruption, just genuine curiosity.** **Participants will practice curiosity, reflecting back values and emotions they hear, asking thoughtful questions, and- only with permission- offering their perspective.** **It’s a simple and powerful way to connect with one another and begin the year with a respectful and courageous conversation.** **Date: Saturday, January 10, 2026** **Time: 3:30 pm - 5:30 pm** **Place: Columbus Metropolitan Library, Southeast Branch, 3980 Hamilton Rd, Groveport, Ohio** **All are welcome- bring a friend!** For additional information contact: Lee Evans at [LEvans@BraverAngels.org](mailto:LEvans@BraverAngels.org)

Help us ringing New Year’s Eve with our traditional bowling Meetup and Bar crawl with Central Ohio friends. Sequoia has reserved 8 lanes for us at $15 per Person which includes 2 hours of unlimited bowling and shoes!! Bowling begins promptly at 9 PM. Please arrive early. See you there! Yes