Category Theory

**When:** Saturday\, February 21 \| 5:00 PM – 8:00 PM **Where:** [1124 Parsons Ave, Columbus, OH 43206](https://twodollarradiohq.com/about-us) Looking for a night of meaningful connection and great vegan food? Join us at [Two Dollar Radio Headquarters](https://www.google.com/viewer/place?mid=/g/11fkn49_yq&sa=X&ved=2ahUKEwj14_nkjsWSAxVt4ckDHdRCH4oQqdYPegYIAQgFEAI) for a special community gathering! **What’s on the menu?** While [2$R](https://www.google.com/viewer/place?mid=/g/11fkn49_yq&sa=X&ved=2ahUKEwj14_nkjsWSAxVt4ckDHdRCH4oQqdYPegYIAQgGEAI) typically serves a selection of [house-made sandwiches](https://twodollarradiohq.com/weekly-food) and vegan pastries, they are creating a **special menu** specifically for our event. You can also grab a coffee, tea, or a drink from their [full bar](https://twodollarradiohq.com/) of cocktails and beer. **The Main Event:** * **Play:** Bring a favorite game from home to share or dive into the ones available at the shop. * **Connect:** Meet new and old friends in a space that values independent culture and plant-based living. * **Support:** Help us champion a local, family-owned vegan business that doubles as a powerhouse [indie book publisher](https://twodollarradio.com/pages/headquarters). **Parking Instructions:** * **Street Parking:** There is free public street parking available on both sides of Parsons Avenue and on the surrounding residential side streets. * **Lot Parking:** The [Columbus Metropolitan Library](https://www.google.com/viewer/place?mid=/g/126262ks5&sa=X&ved=2ahUKEwj14_nkjsWSAxVt4ckDHdRCH4oQqdYPegYIAQgKEAM) lot (1113 Parsons Ave) is located directly across the street and is available for guest use **only after the library has closed**. On Saturdays, the lot is typically available starting at 6:00 PM. * **Bike Parking:** For those cycling, there is a bike rack conveniently located at the corner of Cline and Parsons.

# **Band: Old Possum's Menagerie; Caller: Richard Ades** Beginner lesson at 1:30, regular dancing begins at 2:00 pm NOTE THAT WE ARE TEMPORARILY DANCING IN THE AFTERNOON INSTEAD OF EVENING. Dance with us in the afternoon then you can still go out in the evening! **Sponsor: All Soles Contra and Square Dancing, First Unitarian Universalist Church, 93 W. Weisheimer Rd., Columbus OH 43214** WHAT IS CONTRA DANCING? Picture the Grand Ball scenes like you’ve seen in period films such as “Pride and Prejudice”, where the dancers are lined up in long lines, across from each other. That’s English Country Dancing, the predecessor of contra dancing. Now, add moves like “swing your partner” and “do-si-do,” like you’ve seen in square dancing. Set it to fabulous, high energy, live music with fiddles, guitars, percussion and more, alá “Riverdance.” Finally, set the whole scene down in the middle of Woodstock, with a hip, groovy atmosphere, a bit of tie-dye, and hints of counter-culture attitude. THAT’s Contra Dancing! Wear cool and comfortable clothes (you will get warm) and clean shoes that won't mark up our nice wood floor. Be sure to come for the beginner's lesson from 1:30 - 2:00, followed by dancing 2:00 - 430. All dances are taught; we will help you learn! Beginners always welcome, no need to bring a partner. Cost is $10.00 adults, $5.00 ages 12-26. Under 12 free. Free parking in church lot. Please bring your own refillable water bottle.

12;45-3:45 in Conference Room A, Library lower level. Bring your yarn projects, meet new friends. If you plan to attend, please RSVP yes. If you can’t attend, please change your RSVP to no. This helps anyone who is waitlisted and it allows me to have an accurate count of attendees as our space is quite limited. Plenty of parking in the lot, in the overflow lot across the street, and on the street. See you there! Winter Note: If the weather is bad and I have to cancel the Meetup, i will issue the cancellation not later than 10:00 a.m. of that day.

Join us for a vibrant gathering that honors the heart and hustle of local entrepreneurs. It Takes a Village is more than an event it’s a movement to uplift and spotlight small business owners who pour passion into their craft and creativity into our community. From authors and bakers to jewelry makers, t-shirt designers, candle crafters, and beyond. This is your chance to meet the makers, support their work and celebrate the spirit of collaboration. **_Expect_** * Local vendors showcasing handmade goods * Live demos and storytelling from featured creators * Food, music, and community vibes * Opportunities to shop, connect and be inspired * Celebrate the power of small businesses and we all rise

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. If the weather cooperates we will be meeting in the patio. 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."

As you may or may not know--I didn't until late last year--Aristotle wrote extensively on "friendship" in the Nicomachean Ethics. After 69 years the concept of friendship still creates questions and uncertainty. I had close friends in high school and for a few years after high school but our interests diverged and people moved all over the country so it was hard to maintain connections. * So if I/you haven't talked with a friend for several years, are you still friends? Are we friends who meet at Drunken Philosophy or Omnipresent Atheists? * Can you be friends with someone with whom you have virulently divergent political views? Sartre and Camus could not. * Aristotle regarded friendship as essential to a good life, not merely an added "bonus." Do you agree? * In the Nicomachean Ethics (Books VIII and IX), he claims that wealth and power are meaningless without friends. Trump has wealth and power but seems to have no real friends, but wealth and power seem meaningful to him in perverted ways. Can you have meaning in your life without friends? * Do men and women view and maintain friendships in different ways? * Aristotle categorizes friendship into three types, based on what forms the bond: * **Utility**: Based on mutual benefit, but this type is fragile and ends when the usefulness ceases. * **Pleasure**: Based on shared enjoyment (e.g., humor, hobbies). Common among youth but fades as interests change. * **Virtue (The "Complete" Friendship)**: Based on mutual respect for each other's character and goodness. You wish good for the other for their sake, not yours. * **Key Principles of "True" (Virtuous) Friendship:** * **Permanence**: Virtuous friendships last a lifetime whereas those based on utility and pleasure are fleeting. * **Reciprocity**: Requires mutual goodwill; secret or unreciprocated affection does not qualify. * **The "Second Self"**: A true friend is "another self"—their virtue helps you understand and improve yourself. * **Time and Intimacy**: Deep ("complete") friendships are few, built on time and shared experiences. * **Self-Love and Friendship:** * Good friendship starts with being a friend to yourself. * They distinguish shallow egoism (chasing honors) from real self-love (pursuing virtue). * A virtuous person’s pleasant self-company allows them to be a stable, good friend to others. * Aristotle argues that one's social circle ultimately reflects one's character—a view with striking relevance today. Well--the Drunken Philosophy social circle certainly reflects good character!

We’re still working to get more people into these Meetups, but our goal is to give PlayYourCourt members a few social tennis outings each week in addition to your practice sessions and Challenge League matches. These Meetups are co-ed, super laid back, and all skill levels are welcome. Post your skill level and a suggested court in the comments section so we can round up as many players as we can for some tennis fun! Also, if you’re looking to meet new practice partners or play some matches and you aren’t already in the PlayYourCourt Community, you can go here to see what we’re all about and sign up: https://www.playyourcourt.com/tennis-community/columbus-oh/meetup/ If you love tennis, we’d love to have you! Be sure and watch the quick video that explains how everything works. Happy hitting! - Scott

**Last Stop** Industry party for all hospitality workers Event style tarot readings with Cynthia Hartline.

Join Neurospicy Columbus at the Stauff's for coffee and then a stroll through the Book Loft nearby! This will be a friendly chat for like minded individuals with Autism and/or ADHD (or somewhere on the Neurodiverse Spectra).

Join fellow Queer birders on February 22nd for birding at Pickerington Ponds Metropark. No expertise required!

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia

Join us for something different as we get together to see EPIC: ELVIS PRESLEY IN CONCERT! While researching his 2022 film, director Bas Luhrmann came across and compiled rare and previously unseen interviews and videos of Elvis in concert to create “one of the most exciting concert films you’ve ever seen!” Here are details, a trailer and our plan for this event: DESCRIPTION: Part documentary, part concert film, the latest from director Bas Luhrmann is a follow-up to his 2022 film starring Austin Butler. While researching the film, he came across 68 boxes of previously unseen interviews, concert performances and outtakes from previous films. A combination of offstage and onstage Elvis, comes a film that “befits the magnitude of Elvis as a performer but also offers deeper revelations of his humanity and inner life." It is written/directed by Baz Luhrmann (ELVIS, MOULIN ROUGE, THE GREAT GATSBY) and stars the legendary Elvis Presley! TRAILER: https://www.youtube.com/watch?v=NmqWusmzp0k BUZZ AND ACCLAIM: The film screened at the 2025 Toronto Film Festival where it was the runner up in the category People’s Choice Award for Documentaries. Next Best Picture says, “Certain to energize longtime fans and generate new ones for generations to come, EPiC: Elvis Presley in Concert is a masterwork of montage.” And according to the NY Post, whether you have a room in the house devoted to Elvis or not, this truly “Epic” concert film is an energizing experience!” PLAN: We’ll plan for a pre-show bite at nearby BRAVO around 5 or 5:30pm followed by a 7pm-ish showing on one of their larger screens. Once showtime is announced, advance ticket purchase is advised. Please list your seat number in the Comments below. Exact showtime and meeting details will be confirmed/announced as the date gets closer. Look forward to seeing you there, Dan

Join us as we get together to see the period drama / classic monster movie, THE BRIDE! The film is written/directed by Maggie Gyllenhaal and stars Jessie Buckley and Christian Bale in a new take on the classic tale, The Bride of Frankenstein. We'll be seeing this one on Thurs, 3/5 one day ahead of the film's opening on Friday. Here’s a description, trailer and plan for this event: DESCRIPTION: In 1930s Chicago, Frankenstein's creature asks Dr. Euphronius to create a companion for him. They give life to a murdered woman as "the Bride," sparking romance, police interest and radical social change. It is written, directed and co-produced by Maggie Gyllenhaal and stars Jessie Buckley, Christian Bale, Peter Sarsgaard, Annette Bening, Jake Gyllenhaal and Penélope Cruz. TRAILER: https://www.youtube.com/watch?v=n-qJkAXLfYM PARKING: Close, convenient parking is available in the nearby garage (located between 9th and 11th, just off High St). Bring your ticket with you and have it validated at the theater and for $2, you’re covered for the night! PLAN: Please purchase your ticket for the 7:00pm showing and we’ll meet inside the upstairs lobby between 6:40 and 6:50pm. Advance ticket purchase is advised (via Gateway website preferred). Once you have yours, please list your seat number in the Comments below! Pre-show bite at Cazuela’s next door at 5:30pm. Please arrive by 5:30pm and ask for the Movie Group! Look forward to seeing you there, Dan

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!

**NEW LOCATION: 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). See the handy Parking Map - we recommend street parking. [Street Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) 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 centralohpython@gmail.com

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/