Cartography

**🎉 Book Swap: Bring Your Books to the Martin Luther King Jr. Memorial Library! 📚** 📅 **Date:** Thursday, April 23rd, 2026 🕒 **Time:** 6:30 PM - 8:30 PM 📍 **Location:** Martin Luther King Jr. Memorial Library, 901 G St NW, Washington, DC 20001 **🪧 Room:** 401-G Conference Room **Agenda:** * **6:30 PM - 6:45 PM** \- Check\-in and chat * **6:45 PM - 7:00 PM** \- Introductions * **7:00 PM - 8:30 PM** \- Book swap **Please note**: * Gently used books are ideal for swapping. * If a book you bring isn’t swapped, you are responsible for taking it home. * This is a “stay-and-swap” event, so please join with the intention of engaging and connecting with the group.

Artistic Artifacts hosts **Open Stitch sessions EVERY Thursday evenings** from 5:30 - 7:30 pm — join us! This is a drop-in, bring your own hand stitching project and the necessary supplies (or you can knit, crochet... whatever needle arts you like). There’s no fee to attend, no instruction nor agenda — just a time to spend with other creatives! Visit our website for all our class & event information: **[https://artisticartifacts.com/collections/wk](https://artisticartifacts.com/collections/wk)**

Let’s visit some of the fancy houses in Georgetown. Milage: 4 mi Start Location: Rosslyn Metro Station End Location: Foggy Bottom Metro Station Approximate Time: 6pm - 8pm Map (Approx.): https://maps.app.goo.gl/mNg6Yiav2tL9SakPA Terrain: This will be mostly on roads with some climbs \-\-\- We try to be punctual with our event times so please be respectful to others and show up a few minutes early, because we will leave without you. We're always looking for new leaders who can showcase their neighborhood or any cool places they know, so please reach out either at an event or on meetup if you are interested. If you've enjoyed our walks please consider donating a few bucks to help us keep this group running (meetup is expensive!). [Donation Link](https://venmo.com/code?user_id=2158403661070336114)

Hybrid registration links at https://greatcareers.org/events-calendar/career-success-group-job-seeker-accountability-networking-hybrid/ The Career Success Group is a networking meeting held on the 2nd Monday and a hybrid meeting 4th Thursday of each month from 9:30-10:30 AM ET with [Kevin Keene](https://www.linkedin.com/in/kevinekeene/). Join us if you are looking for a new opportunity, to grow your career, or if you are in a job transition. 1. Practice your elevator pitch in a safe space 2. Check-in for accountability 3. Set goals for your job search for the week 4. Meet others to build your LinkedIn network 5. Learn about upcoming events 6. Ask questions **CHAPTER LEADER** [Kevin Keene](https://www.linkedin.com/in/kevinekeene/) kekeene@comcast.net

This **no gi class** focuses on **advanced [Brazilian Jiu-Jitsu](https://en.wikipedia.org/wiki/Brazilian_jiu-jitsu) concepts**, including takedowns, positional drilling, submissions, transitions, situational sparring, strategy development, and live training. While the class is scheduled for **90 minutes**, it may run longer depending on content and participation. This class includes both instruction as well as [rolling](https://www.howbjjworks.com/bjj-blog/2018/7/29/how-rolling-works-in-bjj) (sparring). The **drop-in fee** for non-members is **$20**, payable on-site. **Note:** We are located in **Suite #130**.

Today we are Steve's Lab. RSVP and you'll be sent the location. It's in Silver Spring. ***Join us for an evening in an electronics lab where we will attempt to run clean scans of gold samples, and then clean up that data with post processing.*** This is a high sensitivity experiment, and we do not plan on being successful so early. But we've had promising results lately - so we will be putting in the time. We are NOT meeting at our usual location, but rather at Steve's house/lab. If you RSVP, you will get a DM with the address but it's located in Silver Spring. We will attempt full, clean lab - clean tip repeated scanning tests to see what we can learn and improve. We will experiment with online attendees, but if all possible showing up in person is strongly encouraged. Online join link is: - [https://meet.jit.si/mocomakers](https://meet.jit.si/mocomakers) Our community is building (and documenting for other teams) how to build a scanning tunneling microscope using a mix of common and 3D printed parts. This will allow us to scan and visualize a single atom - an ambitious we are doing over the course of a few months. The MoCo Makers community is one of the most innovative and competent groups in Maryland, and we've done everything from [publishing cancer research](https://pubmed.ncbi.nlm.nih.gov/38136356/), to [launching products](https://www.kickstarter.com/projects/gotim/cozy-curvy-multi-contour-pillow), [winning grants](https://covidinfocommons.datascience.columbia.edu/awards/2014255), and inspiring thousands. Now our biggest challenge yet has appeared. We are building a Scanning Tunneling Microscope, that will allow us to scan and visualize single atoms. To get a better idea of what we are doing, see our reference project here: [https://www.youtube.com/watch?v=7N3OqTEq08g](https://www.youtube.com/watch?v=7N3OqTEq08g) All starting CAD, code, and reference files should exist. However, let's be the first Maker community to document the build process and share it with learners around the world. We will be publishing our work here -[ https://hackaday.io/project/202816-qt-panda](https://hackaday.io/project/202816-qt-panda) If you need a ride, let us know.

D.C.'s tourist buses ply a small, predictable circle around the monumental downtown. D.C.'s Metrobuses, on the other hand, make a dramatic sweep around the whole city. Join us for the better of the two rides! We'll start at beautiful transit hub Union Station, take the D80 up to Tenleytown in Upper Northwest; then the crosstown C81 across the park to Ft. Totten; and finally the D30 down North Capitol street to return to Union Station. We'll have lunch in the station's food court. Bonus: travel bingo cards will be distributed for those who want even more from their transit outing! Hope you all can make it!

This is a great class for beginner to intermediate players looking to get into bluegrass. Students will learn the basic chords and melody of one or 2 classic Bluegrass songs and how to approach playing them in a jam setting. Over the course of about an hour the class will play the tunes several times as a group exploring different possibilities for kickoffs, solos, endings and more. At the end of the class we open up the jam! Justin plays guitar and banjo with Cherry Blossom Special and runs jam sessions along and runs jam sessions along with mandolinist Nick Cameron and fiddler Mari Carlson. He has been teaching guitar, banjo and mandolin in Takoma Park since 2012. This class was designed to give people an affordable entry point to Bluegrass music, and help grow the community. The class is $30 Register [Here!](https://checkout.square.site/buy/GUSSUYYW5UMKDMCDV4CQBOBL)

**Discover a hidden gem at the heart of DC!** Glover Archbold Park runs parallel to the better-known Rock Creek Park, stretching from Tenleytown to the C&O Canal in Georgetown. As you scramble over rocks and navigate rushing streams, you’ll forget that you’re right in the middle of the city. We’ll be hiking around 5 miles out and back, with a stop midway at the C&O Canal for a bite to eat. This hike is part of a series focused on exploring transit-accessible green spaces in the DMV. Date: Sunday, April 26 Time: 10:30am - 1:30pm Meeting Point: Tenleytown-AU Metro, south entrance What to Bring: Hiking boots or sneakers with good grip, water, snacks and/or lunch This trip is led by Rosie Berman under the supervision of Potomac Chapter hiking leader Peg Barratt Please register for the activity in advance, using the AMC outdoors connector website, https://activities.outdoors.org/s/oc-activity/a5UVX00000168Gr2AI/act00020396

**☕ Code & Coffee \| Black Code Collective** Pull up, plug in, and enjoy some good company. Join us for a chill Sunday coworking session — bring your laptop and your current project (or no project at all). All skill levels welcome. **Free to attend. Coffee & treats provided. Just show up.** 📅 **Sunday, April 26** 🕙 **10:30 AM – 12:30 PM** 📍 **Falls Church, VA** Please note that we would be located on the 5th floor with the listed address below. 105 W Broad St, Suite #410 · Falls Church, VA 22046

Join us for a spring urban hike - a brisk-paced (2.5-3 mph) 5.3-mile loop, beginning and ending at Pitango (1841 Columbia Rd NW) in Adams Morgan. We'll walk through Adams Morgan, Woodley Park, the National Cathedral grounds and Tregaron Conservancy. We'll be on a mixture of trails (1/3) and sidewalks (2/3). We'll have a restroom break halfway through the hike. Bring plenty of water and some snacks, and be sure to wear sturdy, comfortable footwear. Brunch in ADMO after the hike is an option. **DISTANCE:** 5.3 miles **ELEVATION GAIN:** 800 feet - there will be hills! **PACE:** Our average moving pace will be between 2.5 and 3 miles per hour. **DOGS:** Dogs on a leash are welcome. Pitango is halfway between Dupont Circle (North/Q street exit) and Woodley Park (.7 miles). Bus routes C51 C53, D70, D72, D74 are all within a few blocks. There free street parking in the surrounding neighborhood (meters are free on Sundays). But please arrive early so you have enough time to find parking or allow for metro delays.

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

Welcome to the Art School - 20's & 30's artists Meetup group! This is a community for young artists who are passionate about exploring different mediums and techniques in the world of art. Whether you're a painter, sculptor, photographer, or mixed media artist, this group is the perfect place to connect with like-minded individuals, have a space to work on your craft, and showcase your work. Let's inspire and support each other on our artistic journeys! Whether you're a novice or a seasoned artist, all skill levels are welcome. Join us and unleash your creativity! Afterwards, we will have time to work on our individual art projects, hang out, and if anyone is interested in feedback on their work, there will be time for that as well.

Let’s meet and share our thoughts about Carson McCullers’ novella, The Ballad of The Sad Café.

When judging morality, should we prioritize **intentions/duty** or **outcomes/results**? It introduces two influential philosophers as representatives of these approaches. * **Immanuel Kant (deontology):** An action is moral when it is done from **duty** and follows rational, universal principles (the **categorical imperative**). Certain acts—like lying—are wrong regardless of the consequences; you can’t do a wrong thing for a right reason. * **John Stuart Mill (utilitarian consequentialism):** The morality of an action is determined by its **effects**, specifically how much **happiness/well-being** it produces. Mill argues that some pleasures are “higher” than others, and that good intentions don’t redeem harmful outcomes. ## Discussion Questions 1. **The lying dilemma:** A murderer comes to your door and asks if your friend is hiding inside. Kant would say you must not lie. 2. **Can good intentions rescue a bad outcome?** 3. **The organ harvest problem:** A surgeon has five patients dying of organ failure and one healthy patient in for a checkup. Killing the one to harvest organs would save five lives, and the math works out for the utilitarian. Why does this feel so deeply wrong? Is that feeling a point in Kant's favor, or just a bias we should overcome? 4. **Do rules need exceptions?** Kant insists moral rules must be universal, with no exceptions. But most of us can imagine extreme scenarios where any rule seems like it should bend. Does the need for exceptions fatally undermine deontology, or is the strength of the system precisely that it refuses to bend? 5. **Who gets to calculate the consequences?** Utilitarianism asks us to maximize good outcomes, but we're notoriously bad at predicting consequences. If we can't reliably know the results of our actions, is it practical to base our entire moral system on outcomes? Does this uncertainty push us back toward rules and principles? 6. **Everyday morality:** Think about a real moral decision you've made recently, even a small one. Did you reason more like a Kantian (what's the right thing to do in principle?) or more like a utilitarian (what will produce the best result?)? Do most people naturally lean one way? 7. **Justice vs. the greater good:** A town can prevent a deadly plague by sacrificing one innocent person. The greater good is clearly served. But is it just? Can an action be morally right and deeply unjust at the same time? 8. **The big synthesis question:** Are these two systems actually opposed, or do they often arrive at the same answers by different paths? Is it possible that we need both: rules to guide us in the moment and consequences to evaluate systems and policies over time?

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who want to discuss international travel and culture, and anyone who enjoys getting together for good conversations."