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Frequently Asked Questions

Yes! Check out complexity events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.

Discover all the complexity events taking place this week here. Plan ahead and join exciting meetups throughout the week.

Absolutely! Find complexity events near your location here. Connect with your local community and discover events within your area.

Complexity Events Today

Join in-person Complexity events happening right now

GitHub Copilot Dev Day Berlin at adesso SE
GitHub Copilot Dev Day Berlin at adesso SE
Join us for a community-led developer event focused on **AI-assisted coding with GitHub Copilot**. This event brings together developers to explore practical workflows, real-world use cases, and hands-on experiences using GitHub Copilot. Whether you are new to GitHub Copilot or already using it, this event will help you better understand how to apply AI-assisted coding techniques in everyday development hosted at **adesso SE**. **Sessions & Workshops** 1. **GitHub Copilot in practise - Sandra Ahlgrimm** 2. **Let's create a tiny AI library together, Copilot powered - Johannes Bechberger** 3. **GitHub Copilot Hands-on workshop - bring your laptops!** **Location** [Prinzenstraße 34, 10969 Berlin](https://www.google.com/maps/place//data=!4m2!3m1!1s0x47a84e50ecd583e3:0xde16d03634776e3b?sa=X&ved=1t:8290&ictx=111) **Agenda** 17:30 - doors open 18:00 - warm welcome by JUG leader **Sandra Ahlgrimm** and **Gregor Böhme** from **adessoSE** 18:15 - first session 18:40 - second session 19:30 - workshop **Abstracts** **Let's create a tiny AI library together, Copilot powered** We all want to do it. When you want to integrate AI into your tools, what do you do? You add LangChain4j or SpringAI and run with it. But do you know how these libraries interact with the AI service providers or your local llama-server instance? These libraries aren't magic, so let's peek behind the curtain and write a tiny AI library together. This way you'll discover the REST APIs that power it all. **Speaker** **Johannes Bechberger,** a nerd passionate about compiler building and program analyses that enjoys cooking and works on the JVM at SAP ([LinkedIn](https://www.linkedin.com/in/johannes-bechberger-381296149)), making profiling easier for everyone. **Sandra Ahlgrimm** is Senior Developer Advocate working for Java Developers with Microsoft at GitHub. She also leads the Berlin/Brandenburg JUG together with Jörg, Oliver and Jan. **Gregor Böhme** is the Director of Software Development and Delivery Maître at adesso SE and leads a competence center for custom software development. He has many years of experience in building and delivering large-scale software projects, as well as developing teams and growing engineering leaders.. **A big thank you to adesso SE** for hosting the event and generously providing food and drinks during the event. Your innovative approach and commitment to excellence are greatly appreciated!
Big Berlin Comedy!  Comedy and Improv!
Big Berlin Comedy! Comedy and Improv!
Get ready for a night full of laughs at **Big Berlin Comedy!** High Energy Hosting, great vibes and lots of wild crowd interaction! Whether you're a local or just visiting, this is the perfect chance to enjoy some top-notch comedy with friends. Don’t miss out on the fun – comedy fans unite and let’s make it a night to remember! Doors 8pm Showtime 9pm Tickets It's NOT A FREE SHOW. It's Pay What You Want. You just decide the amount you want to pay AFTER the show. Artists deserve to be paid. If you plan to not pay at all, please don't come to our show!! Free Entry + Donation based. We suggest a donation of 10€-15€. Students & unemployed 5€-7€. We accept cards & cash
regular NixOS Meetup @c-base
regular NixOS Meetup @c-base
We are back in the c-base! Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine! Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs. There are drinks usually available from the c-base bar. If you can't find us. just ask around or ask in irc (#krebs on hackint)
Back Door Comedy: Late Mic Standup in English Tuesdays Xberg
Back Door Comedy: Late Mic Standup in English Tuesdays Xberg
Like your standup tight and intimate? Sneak into the back room of Mysliwska on Schlesi for a tight hour of standup by Anna Beros and friends, with local and internationally touring comedians, in English, inclusive and adult. Doors: 21:00 **Show: 21:30** End: 22:30 **FREE ENTRY** \- a donation is requested at the end of the show between 7 and 15€ depending on your life situation **To secure a seat, reserve via https://www.annaberos.com/berlin for 10€ and that's your donation pre-paid!** **Performance space is non-smoking** Main bar is smoking Bar closes super late so stick around after the show **Produced and usually hosted by Anna Beros (AUS)** Anna’s a Kiwi born, Melbourne raised, Berlin based full-time independent standup comedian, YouTube host, podcaster and producer. She celebrates life’s struggles with incisive standup and playful audience interaction. Her new standup solo, High Hoe enjoyed a successful full run at the Edinburgh Fringe 2025 and her previous solos, Creampie Curious and Creampie Clarity played at numerous comedy festivals through the UK and Australia in 2023 and 2024. She tours Europe and produces and hosts 5 weekly shows in Berlin. In 2025, she opened for Jeff Arcuri at Admiralspalast, in 2024 for April Macie on US army bases in Germany and for Ian Fidance in Berlin in 2019. She hosts the comedy channel, Ersties Nonsense, has the podcast Adults ONLY Comedy Berlin and has written for Comedy Central DE. Check out what Anna's been up to: **[https://www.instagram.com/afberos/](https://www.instagram.com/afberos/)** **Venue: Mysliwska**, Schlesische Straße 35 10997 (U1, U3) One of Kreuzberg's oldest bars. Buzz in if you can't open the door. Good vibes, locals and visitors. **Guest comedians** lineup on ig stories @adultsonlycomedyberlin **https://www.instagram.com/adultsonlycomedyberlin/** \>\> comedians DM to be considered for a spot \- limited spots for experienced comedians
Philosophischer Stammtisch - Für Nicht-Philosophen ohne Stammtisch-Niveau
Philosophischer Stammtisch - Für Nicht-Philosophen ohne Stammtisch-Niveau
* *For English, please see below* Der Philosophische Stammtisch ist für alle, die gerne über das Leben philosophieren wollen ohne dabei zu verbissen den Fragen auf den Grund zu gehen. Wir wollen gemeinsam zu neuen Einsichten kommen und einen Raum schaffen für Menschen, die sich auf tieferer Ebene austauschen wollen. Die Fragen können von tiefen metaphysischen Fragen bis zu praktischen Lebensfragen reichen. Diese Veranstaltung soll gerade auch die ansprechen, die sich über solche Fragen Gedanken machen und sich austauschen wollen. Das hier ist kein politischer Diskurs. **Das Thema für diesen Abend** Wird bald bekannt gegeben. **For our English speaking members** We will have one table where the discussion is in English and you are welcome to join :) **Topic** Will be soon announced.
Tuesday Boozeday - English Stand Up Comedy in Neukölln (Sisyfass Bar)
Tuesday Boozeday - English Stand Up Comedy in Neukölln (Sisyfass Bar)
Tuesday night, grab a beer! We've got a comedy show built for locals, tourists, and anyone flying solo. A fast, funny, feel-good evening! Tuesday night, grab a beer! We've got a comedy show built for locals, tourists, and anyone flying solo. This fast, funny, feel-good evening is hosted by Amercan comedians Tera Kilbride and Steph DePrez. Laugh, unwind, and grab a drink: it's Tuesday Boozeday [BOOK HERE PLEASE](https://www.eventbrite.com/e/tuesday-boozeday-english-stand-up-comedy-in-neukolln-sisyfass-bar-tickets-1986796554979?aff=oddtdtcreator) If you’re new to Berlin, riding solo, or looking for a bright place to warm up as the days get shorter, this is the place to be. Grab your REDUCED PRICE ticket now, or show up and pay 15 EUR at the door. Perfect for tourists and locals. Come grab a drink and laugh away the winter blues. Bring your colleagues, bring a first date, bring your mom: Laughs guaranteed. This show is hosted by two heavyweights of the Berlin scene: opera-singing comedian Steph DePrez and veteran producer Tera Kilbride. Please arrive by 7:50 to grab a seat.
AI for Non-Techies
AI for Non-Techies
KI ausprobieren, ohne vorher Informatik studiert zu haben. Das ist die Idee hinter diesem Abend. Vorkenntnisse schaden nicht aber brauchst du keine. Wenig Theorie - viel Praxis: Tools ausprobieren, Fragen stellen, mit erfahrenen Entwicklern an eigenen Use Cases arbeiten. Egal ob du KI bisher kaum genutzt hast oder einfach mehr draus machen willst. **Der Abend:** * Ankommen & erstes Kennenlernen * Impulsvortrag (20–30 Min.) * Hands\-on Workshop in kleinen Gruppen \| selber ausprobieren * Austausch/ Networking zum Abschluss **Vorab - Das bringst du mit:** * Deinen eigenen Laptop zum Arbeiten * idealerweise hast du bereits einen Account bei einem KI-Tool eingerichtet - wir arbeiten mit Claude. **Danach - Du nimmst mit:** * Ein klares Bild davon, wie aktuelle KI-Tools funktionieren und wo ihre echten Stärken liegen * Erste praktische Erfahrung mit KI-gestütztem Arbeiten, direkt am eigenen Rechner * Eine konkrete Idee, wo KI dir im Alltag, Studium oder Job Zeit spart Event for free. Max. 15 Teilnehmende. Verpflegung inklusive. Im berliner Büro nahe U-Bahnhof Heinrich-Heine-Straße. **Über uns:** Wir sind Teclead Ventures - Nicht mehr ganz ein StartUp aber jung geblieben :D Seit 8 Jahren in der Softwareentwicklung und IT-Beratung unterwegs . Mittlerweile begleiten wir auch kleine und mittlere Unternehmen beim strukturierten Einstieg in KI.

Complexity Events This Week

Discover what is happening in the next few days

18 Uhr: Angst - Motor oder Hemmschuh persönlicher Entwicklung?
18 Uhr: Angst - Motor oder Hemmschuh persönlicher Entwicklung?
Das Thema Angst ist nicht nur ein Thema der Psychologie. Angst kann man auch soziologisch und philosophisch untersuchen. Das soll beim nächsten Treffen geschehen.
ComedyShorts Berlin- Competitive Comedy Improv Match
ComedyShorts Berlin- Competitive Comedy Improv Match
ComedyShorts Berlin is a fast-paced competitive improv comedy-match played like a sporting event. Two teams go head-to-head in a playful, highly interactive battle-of-wits where the audience yells out suggestions all night and votes for which team brings on the ‘funny.’ The group performs in English, and established itself as the the first English-speaking improv group in Berlin since its premiere in 2005. Tickets are only 12 eu sold through YesTicket, at 14 eu at the door. Ticket link: [https://www.yesticket.org/e/fxegY8tDXi](https://www.yesticket.org/e/fxegY8tDXi)
BitDevs Bitcoin Socratic Seminar Berlin
BitDevs Bitcoin Socratic Seminar Berlin
**BitDevs Bitcoin Socratic Seminar Berlin @ c-base Raumstation** Join us for our monthly interactive **[Bitcoin Socratic Seminar](https://bitdevs.berlin)** in Berlin! We’ll start with pizza and beer (sponsored by [Ordimint.com](https://ordimint.com)), followed by deep-dive discussions on the most interesting *technical* developments in Bitcoin from the past month. Participation by everyone is highly encouraged! Our goal is to foster lively discussion, knowledge sharing, and debate. In the weeks leading up to the event, participants gather topics such as: * New research papers * New BIPs and BOLTs * Network statistics * Technical blog posts * Mailing list and Delving Bitcoin threads * Pull requests and updates from key repos (Bitcoin Core, LND, Core Lightning, Eclair, BDK, rust-bitcoin, LDK, Electrum, …) Each topic is briefly introduced by our moderators and then discussed before moving on. The full list of links will be published at [bitdevs.berlin](https://bitdevs.berlin) 1–2 days before the event — please review them in advance to get the most out of the discussion. **Important details:** * This event is highly technical — best suited for those with a solid grasp of Bitcoin internals. Curious newcomers are always very welcome, but expect in-depth conversations (see the former topics at [bitdevs.berlin](https://bitdevs.berlin)). * Chatham House Rule applies: you may share what was discussed, but not who said it. No livestream, no photos, no recordings. * The evening begins with food and networking; people often stay after the seminar to keep talking. **Co-hosted by:** * [Felix](https://x.com/FelixWeis) * [Freerk](https://x.com/freerko) * [Fabian](https://x.com/fjahr) For background on the idea of BitDevs Socratic Seminars, see [this article](https://bitcoinmagazine.com/articles/op-ed-want-to-learn-about-bitcoin-try-a-local-socratic-seminar).
In Bad Company - the comedian’s best friend experience
In Bad Company - the comedian’s best friend experience
You know that friend you always say yes to, even though — or maybe because — you have no idea what you're getting into? That's what this is. In Bad Company is a one-hour stand-up show hosted by Sepideh Kaav, featuring 2–3 of Berlin's best comedians at one of Mitte's coolest bars, HIER WO DU STRAHLST. Expect a night of great comedy, terrible decisions, and the kind of socializing where by the end of the night we all somehow know each other a little too well. No topic is off limits. No one is fully safe. Come with friends, come with a date, come alone, honestly, especially come alone, maybe you meet your future best friend or soulmate here. 🍸 HIER WO DU STRAHLST ⏰ Thursday at 8:30 PM (CEST) Doors: 20:30 Show: 21:00 to 22:00
The Body: Power, Shame, and Freedom
The Body: Power, Shame, and Freedom
### The Body: Power, Shame, and Freedom The body is one of the most personal and universal aspects of human existence. It is how we experience the world, express identity, form relationships, and navigate society. Yet the body is never purely biological. Across history and cultures, bodies have been shaped by social norms, political systems, religious beliefs, economic structures, and ideas about morality, beauty, gender, and control. The human body is deeply connected to power. Societies regulate bodies through laws, institutions, medicine, fashion, labor, media, and cultural expectations. Certain bodies are privileged, protected, and celebrated, while others are marginalized, disciplined, or excluded. Standards surrounding beauty, health, sexuality, gender, and physical ability influence how people are perceived—and how they perceive themselves. At the same time, the body is closely tied to shame. Shame can emerge from social judgment, religious expectations, family dynamics, cultural ideals, or comparison with others. People may experience shame related to appearance, aging, sexuality, vulnerability, illness, disability, race, gender expression, or bodily imperfection. In this sense, shame is not only personal but also social and political, shaped by broader structures of power and belonging. Yet the body is also a site of freedom, resistance, and self-expression. Throughout history, individuals and movements have challenged norms surrounding bodies, identity, sexuality, dress, and physical autonomy. The struggle for bodily freedom includes questions of consent, self-determination, health, gender equality, reproductive rights, disability rights, and freedom from violence and discrimination. In contemporary society, the body is increasingly shaped by technology, digital culture, and consumer capitalism. Social media intensifies visibility, comparison, and self-presentation, while medical and technological developments transform how bodies are modified, monitored, and understood. New possibilities for self-expression coexist with new pressures surrounding perfection, productivity, and control. Looking ahead, emerging technologies—including artificial intelligence, biotechnology, genetic engineering, and virtual reality—may fundamentally reshape how humans experience embodiment, identity, and physical existence. This raises important questions: What does bodily freedom truly mean? How much control should individuals or societies have over bodies? And how can dignity and autonomy be preserved in a world of increasing surveillance, optimization, and technological intervention? This discussion invites a critical exploration of the body as a biological, psychological, social, and political reality—one deeply connected to identity, power, vulnerability, and human freedom. *** 📅 Event Details 🗓️ Date: Saturday, 16 May 2026 ⏰ Time: 14:30 📍 Location: Hardenbergstraße 10, 10623 Berlin 📱 WhatsApp: For prep materials and directions (Group Chat) [Group Chat](https://chat.whatsapp.com/Ba8ZAaH2Yuk6FGmD3LLO7H)
Sunday Tech Coffee Meetup
Sunday Tech Coffee Meetup
Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.
Berlin Relational Lab — Meet Singles & Experience Real Connection
Berlin Relational Lab — Meet Singles & Experience Real Connection
# Tired of dating apps or surface-level events? This is different. This is a **2-hour guided relational experience** designed to help you connect with other singles in your city — without small talk, pressure, or performance. **What happens:** • You join a 2-hour guided online session • You meet a small group of singles from Berlin • You’re led through structured connection exercises • Within 48 hours, you meet the same group in person • You stay connected afterward via WhatsApp **This is for you if:** • You’re done with shallow or random social spaces • You want deeper, more intentional connection • You’re open to a structured experience If you’re just browsing or looking for something casual, this likely won’t be a fit. **Important:** Spots are limited and booking happens through our website. 👉 Reserve your spot & stay in the loop with new events every month: [[https://consciousconnections.com/join](https://consciousconnectionsclub.com/join)] **When:** Online session: [9-11 AM] In-person meetup: within 48 hours (details shared after booking) Most people come alone. Most leave having met people they genuinely want to see again.

Complexity Events Near You

Connect with your local Complexity community

TBD
TBD
**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** TBD **YouTube Link** TBD
The Non-competitive Tennis Partner Program
The Non-competitive Tennis Partner Program
We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)
Building Scalable Customer Identity Resolution Pipelines on AWS Using AI
Building Scalable Customer Identity Resolution Pipelines on AWS Using AI
Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com
Columbus Comedy Improv Meetup at Gresso's!
Columbus Comedy Improv Meetup at Gresso's!
Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! The idea behind improv is to create entire scenes from scratch based on a suggestion from the audience. This can be done in game form, like *Whose Line Is It Anyway*, *ComedySportz*, or *Wild 'n Out*; it could also be done to tell stories, like *Middleditch and Schwartz*. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!
Building Momentum: From Ambiguity to Execution
Building Momentum: From Ambiguity to Execution
**Building a great product is one thing—building momentum behind it is another.** Join **Senior Product Manager Adam Solaiman** and **User Experience Manager Tyson Smith** for a behind-the-scenes look at what it takes to turn complex ideas into scalable products inside large organizations. In this session, they’ll share how teams move from ambiguity to execution—navigating organizational complexity, aligning stakeholders, and continuously evolving products after launch. You’ll walk away with insights on how to: * Build and sustain momentum across teams * Adapt to changing priorities without losing direction * Scale products thoughtfully in complex environments Whether you're driving a new initiative or growing an existing product, this conversation will give you practical strategies to keep things moving forward. Come connect, learn, and swap stories with fellow product professionals. \-\-\- Food and drinks will be provided by Switchbox, our generous host. Free parking will be available at the front and back sides of the Switchbox Office.
13TH ANNIVERSARY!!! - Columbus Comedy Improv Meetup at Gresso's!
13TH ANNIVERSARY!!! - Columbus Comedy Improv Meetup at Gresso's!
Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! The idea behind improv is to create entire scenes from scratch based on a suggestion from the audience. This can be done in game form, like *Whose Line Is It Anyway*, *ComedySportz*, or *Wild 'n Out*; it could also be done to tell stories, like *Middleditch and Schwartz*. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! **AND TODAY IS OUR THIRTEENTH ANNIVERSARY!!!** So be ready for a celebration of everything that's made Improv Meetup wonderful: you, the amazing performers! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!
LLM Showdown: ChatGPT vs Claude vs Gemini vs Local Models
LLM Showdown: ChatGPT vs Claude vs Gemini vs Local Models
Join us for a practical, beginner-friendly guide to choosing the right large language model. We’ll compare major models like ChatGPT, Claude, Gemini, and Llama, talk about when to use hosted APIs versus local models, and break down the tradeoffs around cost, speed, quality, privacy, context windows, coding ability, and reliability. You’ll leave with a clearer mental model for picking an LLM based on your actual use case instead of hype, benchmarks, or brand names. No deep AI background required. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.