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Frequently Asked Questions

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

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

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

Reason Events Today

Join in-person Reason events happening right now

Public Speaking & Leadership Training
Public Speaking & Leadership Training
MakeyMonday 2026 Elektronica & microcontr. (Arduino&ESP&RPi)
MakeyMonday 2026 Elektronica & microcontr. (Arduino&ESP&RPi)
Kom naar het HaHaHo Makers Lab Utrecht voor een avond vol kennis & ervaringsdelen en maken, met de focus op elektronica met microprocessoren zoals Arduino & Raspberry Pi, LED’s en meetapparatuur. 19:00 Inloop + opzetten apparatuur 19:45 Standup: wat wil iedereen doen en/of leren deze avond? 20:00 Parallelle activiteiten: – startactiviteiten voor nieuwe deelnemers (Arduino, soldering, meetapparatuur, etc.) – onderlinge kennisuitwisseling adhv de wensen uit de standup – werken aan het gezamenlijke [PraatPaal-project](https://github.com/hadoopmarc/hahaho-interactive-pole) – werken aan je eigen project – ordenen/markeren van de ladenkasten met elektronisch componenten 21:30 Start met opruimen 21:45 Einde en verlaten van de Bibliotheek Wij zijn meestal met een groep van een kleine tien (er is ook nog een whatsapp aanmeldingslijst). Een laptop is niet noodzakelijk maar komt vaak van pas! We vragen een vrijwillige donatie van €5,55 per avond om de inventaris met apparatuur en elektronische componenten op peil te kunnen houden. English 19:00 Room available for setting up equipment 19:45 Standup: what are the participant’s plans and wishes for the evening? 20:00 Parallel activities: – starter activities for new participants (Arduino, soldering, measuring equipment, etc.) – sharing knowledge as follow-up on the plans and wishes expressed during the standup – working on the community [Interactive Pole project](https://github.com/hadoopmarc/hahaho-interactive-pole) – working on your individual project – sorting the chest of drawers with electrical components 21:30 Start decluttering the room 21:45 End: leave the Public Library Most evenings see a group of about 10 people (there is an additional whatsapp list). Bring your laptop if you want to program microcontrollers! We ask for a voluntary donation of €5,55 per evening to maintain the inventory with equipment and electrical components.
🌿 Monday Walk in Brummen
🌿 Monday Walk in Brummen
🌿 Monday Walk in Brummen Start your week with a refreshing walk and great company! We’ll meet at Brummen Railway Station at 1:00 PM and head out to explore the beautiful nature around Brummen. The area offers peaceful forests, scenic trails, and lovely countryside—perfect for a relaxed walk and good conversations. The weather looks great, so it’s the perfect chance to enjoy the outdoors, meet new people, and make new friends. 📍 Meeting point: Brummen Railway Station 🕐 Time: 1:00 PM Please wear comfortable walking shoes and bring a bottle of water if you’d like. Everyone is welcome, whether you’re new to the area or just looking to expand your social circle. Come along, enjoy nature, and let’s have a fun afternoon together!
Kant’s Cave: Dungeons & Dragons and Philosophy - Peter Worley
Kant’s Cave: Dungeons & Dragons and Philosophy - Peter Worley
ATTEND IN PERSON OR ON ZOOM Note the new location! (St Hilda's East in Shoreditch, London) Should you put on Plato's Ring of Gyges? What makes a decision a good one? And what can slaying dragons teach us about living well? Join philosopher, educator, author and veteran Dungeon Master [Peter Worley](https://peterworley.uk/) for an accessible introduction to the surprising philosophical depth of Dungeons & Dragons. Using examples from the game alongside ideas from the Stoics, Simone de Beauvoir and Nietzsche, Peter Worley will show how role-playing can become a powerful way of thinking about the decisions we make both in fantasy worlds and in our own lives. No previous experience of D&D required. Pre-explore via RationalGrid.ai [here](https://rationalgrid.ai/g/what-are-the-philosophical-underpinnings-of-dungeo-2511f5/graph) [Peter Worley](https://peterworley.uk/) is a philosopher-educator, specialising in questioning, dialogue, and philosophical inquiry. He is the author or editor of eleven books on doing philosophy, including *The If Machine, The If Odyssey and Corrupting Youth*. He is creator of PhiE pedagogy of philosophical enquiry, and the Founder of The Philosophy Foundation, through which he helped bring philosophy into schools, communities, and workplaces internationally. Peter's work has inspired and featured in films including the BAFTA-nominated BBC animation *What Makes Me, Me?*, the acclaimed documentary *Young Plato*, and the BBC drama *Waiting for the Out*. An experienced Dungeons & Dragons 'Dungeon Master' (DM), Peter has been incorporating its elements in his educational work in philosophy for two decades. This event is sponsored by the Royal institute of Philosophy. Lecture and discussion! See you there? For the full programme of events pls see [pfalondon.org](http://pfalondon.org)
Swimming lessons for adults | Beginners
Swimming lessons for adults | Beginners
If you are living in The Netherlands, by now, you may well have noticed the amount of open water. If you enjoy cycling in the city, you may wish to feel safer as you navigate the bridges and canals. And you may also want to get ready for visiting the beach, pools or the many lakes this summer. Learning how to swim takes approx 1 year and it all starts with the very first lesson. New comers enroll via our website and pay € 30,50, this is the first lesson and a goody bag. After the class you agree with the personal swim coach how to continue to obtain your final objectives. Enrolling is only possible via [www.your-personal-swim-coach.nl ](https://www.your-personal-swim-coach.nl/)hence a rvsp via meetup is not enough.
Monday Night - East - 54K
Monday Night - East - 54K
A great ride along the Vecht and Gein rivers. You will love this route. Please ride single file along the winding river as there can be cars around each corner. **Route:** https://connect.garmin.com/modern/course/441606271 GPX: https://drive.google.com/file/d/17-T_pT_GH3QKSFcH1WWgfArvxSdAkVzO/view?usp=sharing **Afterwards:** Drinks at Polder https://maps.app.goo.gl/tbt5DDG7YLU3uWvaA **Rules:** \- Download the route to your cycling computer so you can always find your way home \- Make sure to arrive on time \- Before you ride\, decide as a group how you want to ride: you can split up in a fast and a slow group or stay together\, but make sure to discuss what pace you are going to ride and whether you are going to wait if someone is slower than the group\, or not\.
Buitenspelen voor volwassene
Buitenspelen voor volwassene
Samen sporten, gewoon voor de fun, elke week een divers programma, met allerlei verschillende sporten. Je hoeft niet de beste te zijn, maar wel zin hebben om samen te spelen en te leren. Tijdens een training doen we verschillende spelletjes, basketbal, voetbal. volleybal, spikebal, honkbal. Kom je ook, de bal ligt bij jou!! Eerste keer meedoen is altijd gratis, daarna kan je beslissen of dit voor jou is, of niet!! Dus kom een keer proberen. Kan je niet op deze dag, we sporten ook op andere dagen nl Zondag om 9:30 of Maandag om 20:30 Stuur mij een berichtje als je op die dagen een keer wil proberen! The amount of people rsvp'd to this game doesn't match the real number of people at the event, as Meetup is only used for promotion purposes.

Reason Events This Week

Discover what is happening in the next few days

Vegan dinner in Nijmegen
Vegan dinner in Nijmegen
Join us for a home-cooked vegan dinner in Nijmegen, organized by Jitse — who recently moved back to the city after working on AI governance in The Hague and Brussels. 📍 Weurtseweg 15, Nijmegen (close to central station) 🕢 Welcome from 18:30, dinner at 19:00 **Topic: making impact from the periphery** Most of the big decisions in politics, finance, and research get made in a handful of cities. So what does that mean if you're not there? We'll explore where distance from 'the action' is a real constraint, where being in a smaller city is actually an asset, and how to think about maximizing your impact without necessarily being close to the centre of things. This is a relaxed dinner — good food, good conversation, and a mix of people who are new to effective altruism and people who've been involved for a while. All are welcome! **New to EA?** Effective altruism is a community and way of thinking about how to do the most good. You can read more here: 🌍 \[Introduction to Effective Altruism\]\(https://www\.effectivealtruism\.org/articles/introduction\-to\-effective\-altruism\) 🇳🇱 \[EA Nederland — Wat is effectief altruïsme?\]\(https://effectiefaltruisme\.nl/en/what\-is\-effective\-altruism\) Please sign up so we have a rough headcount. See you there!
Movement, Breath & Play
Movement, Breath & Play
It is an outdoor movement class at calisthenics park in Griftpark. We focus on functional breathing exercises, reaction games, learning new functional movement pattern. Think of different kind of squats and animal flow. We work on the mobility of the shoulders, spine and hips (Among others). Every session will have different kind movement flavors on the menu. So there will be a moment of surprise, curiosity and novelty in any class. Every exercise will be adjusted to your current level. Exact location: https://maps.app.goo.gl/cQUKxqzCuVHeSL917
Planken Wambuis, (13km), Ede, July 11th
Planken Wambuis, (13km), Ede, July 11th
Lunteren Forest & Dunes Hike (19 km)
Lunteren Forest & Dunes Hike (19 km)
Ready for a scenic hike? We’re heading out for a beautiful 19 km hike around Lunteren, passing forests, sand drifts, and even the official geographical center of the Netherlands. Expect beautiful nature, good conversations, and a great way to meet new people! 19 km is also a perfect first training day for the [PLN charity walk](https://www.meetup.com/nijmegen-explore-and-more/events/313573496/). And you’re of course also absolutely welcome to come if you’re not joining the fundraiser. Come for the nature, the social vibe, or just because you enjoy a solid hike. **What to expect** 📍Distance: \~19 km 🌲Terrain: mostly forest paths, sandy sections and heathland (varied and scenic) 🚶**‍**Pace: relaxed but steady ☕Breaks: there are some nice spots for a couple of breaks **Times & places** ⏱️**12:15** Start at [Lunteren train station (Spoorstraat 4, 6741 DE Lunteren) ](https://maps.app.goo.gl/6uPDXGh8ATBDJJQe9) 🏁**17:00** Back at starting point (estimate depending on pace and breaks, flexibility helps) **Cost** 💰[A €7.50 donation](https://www.detikkendeklokchallenge.nl/fundraisers/sam/donate) (or more 😉) to the PLN fundraising walk. Prefer to donate via a payment link/iDeal, or cash? Just send me a message! 🎗️This event is free if you have already signed up for our team in the [PLN fundraising walk](https://www.meetup.com/nijmegen-explore-and-more/events/313573496/) ❤️‍🩹The brother and mother of one of my best friends have been diagnosed with PLN, a genetic heart condition. This disease still has no cure and crucial research is at risk of slowing down as international funding becomes uncertain due to the changed political climate. That's why we are trying to raise funds, so this very important research can continue. **Preparation** 🥾This is a friendly training distance, suitable if you’re comfortable walking longer routes. No speed needed, just a positive mindset. 🥪Bring water, snacks, weather-appropriate clothing, and comfortable shoes. ❓Questions? Send me a message, happy to help :-) **Event Policies** ⚠️ Disclaimer: Participants are responsible for their own safety. Please stay with the group and respect nature at all times. ⚠️ Cancellation: The event will be canceled in case of severe weather conditions (you’ll be notified in advance). A refund is not possible because this is a fundraiser, the money goes directly to a good cause. But I will try to reschedule a worthy replacement event :-) ⚠️ No-show might result in ban: Marking yourself as "going" takes a spot away from others for limited capacity events like this. If you are marked as going but don't show up, you might be banned from the *Nijmegen Explore & More* group
7km hike from Amersfoort Vathorst to Landgoed Hoevelaken and back
7km hike from Amersfoort Vathorst to Landgoed Hoevelaken and back
Join us on a 7km hike from Amersfoort Vathorst train station to Landgoed Hoevelaken and back. From Vathorst Station we'll walk through a residential area for around 15 minutes until we'll cross under the A28 highway and head into Landgoed Hoevelaken. Here we'll walk on a mixture of long forest lanes and smaller winding forest paths. After crossing the provincial road to Nijkerk we'll also walk through the Overbos forest. At the end we'll head back to Vathorst train station via Nijkerkerveen village, some meadows and along the railways. Utrecht Hiking Community is organising one hike per month. Our aim is not to hike fast, but to hike "gezellig". It's intended to be a mixture of being active in nature, exploring places in and around Utrecht and meeting fellow hiking enthusiasts. Everybody is welcome to join, no matter whether you are a beginner or a hiking pro, expat or a local, student or professional (or maybe even retired). Also you can come with friends, but alone as well. At our previous hikes there were always many people who didn't know any of the other hikers, so it's a perfect opportunity to get to know some fellow hiking enthusiasts. If you like this idea and want not only to participate but to support us as well, you can help us by making a small donation using this link: https://www.ing.nl/payreq/m/?trxid=L9Z0gDbAfY48ETP1VhKdTHId88RaaaDe We're using these to cover for our travel costs and MeetUp subscription (about €200 a year for event organisers). We'll start our hike at 10.30AM and will meet in the tunnel under Amersfoort Vathorst train station. Please try your best to arrive on time, since if you arrive later, we won't make the whole group wait for you. You can however send a message on WhatsApp to +31621177691, so we can send you our live location and you can try to catch up with the group. For those coming by car, there are a few parking places at the end of the Amendijk street in Hooglanderveen, which are directly next to the train station. At the nearby Vathorst shopping center there are many more free parking places. After the hike, after arriving back to Vathorst train station, we can go for a lunch with anybody who wants to in the nearby Vathorst shopping centre. What should you bring for this hike? Good hiking shoes (about half of the route is paved and the other half is unpaved), a bottle with water or anything else you'd like to drink on the way and of course a good mood are the only things really necessary. Also don't forget to put on some SPF. A few other practical things that are good to know: Dogs are allowed on this route, but need to be kept on a leash while we are not walking in Landgoed Hoevelaken. There is no toilet at Amersfoort Vathorst train station, so please make sure to visit a toilet before you depart to Amersfoort Vathorst. Alternatively you can go to the toilet in the library in the Vathorst shopping centre, but it's a 3 minute walk from the train station to get there. We will make some photos during the hike for on our social media (Instagram: @utrecht.hiking.community). If you don't want to be on any photos, you can still join, but please notify the organisers before the hike. And finally, in case of very bad weather we might postpone the hike to another date. Right now it doesn't look like we may expect that kind of bad weather, but just for in any case, please check this event for any updates on the evening before the hike. See you on Saturday!
Painting & Drawing Cafe in Amersfoort ( For Expats and English Speakers )
Painting & Drawing Cafe in Amersfoort ( For Expats and English Speakers )
## 🎨**Activity for EXPATS & English Speakers** ☕ Are you an art enthusiast living in or around **Amersfoort, Hilversum, Utrecht, Nieuwegein, IJsseltein, De Bilt and the rest of cities of the Utrecht's province** who love painting or drawing? Maybe you've felt the joy of creating but struggled to find others who share your passion and speak **ENGLISH**? **You're not alone! 😉** ✨✨✨✨✨✨✨ ## 🖌️**About this event** You will meet other Art Lovers like you to Draw, Paint and have some drinks Together ! Our events are not just about sketching or creating art—they’re about building connections. Every two weeks, we meet at a café to have a relaxing time drawing a painting. Please keep on mind that **ENGLISH i**s the official language we will use to integrate everyone in our conversations. ⭕⭕⭕➡️ **IMPORTANT ⬅️** ⭕⭕⭕⭕ ### 👩🏻‍🎨**Book formally your Seat 🪑via [WHATSAPP](https://bit.ly/3BXXE0f)** **If you want to confirm officially your attendance and separate your seat🪑. Book your seat in meet-up, and contact us via [WHATSAPP HERE](https://bit.ly/3BXXE0f) to receive more information on the address of our activities.** **Thanks a lot for your understanding!** 💐🥰 ✨✨✨✨✨✨✨ ### 👩🏻‍🎨**How Does It Work?** This event is simple, this initiative takes 2 Hours. Most of the participants use pencils, water pencils or watercolours. Main aim is to socialize while we draw. There will be plenty of time to talk and get to know each other. We have to mention that this event is suitable for all levels. Many have started to draw in our event actually. Also it is very important that you **[JOIN US AT OUR WHATSAPP COMMUNITY](https://bit.ly/3BXXE0f),** to stay up to date on our upcoming events and participate in our Drawing and Painting Contests! **👉: [https://bit.ly/3BXXE0f](https://bit.ly/3BXXE0f)** 🍀 ✨✨✨✨✨✨✨ ### ☕**Where?** We will meet in different cafes mainly in the *center of Amersfoort ( and some occasions in other cities around)*. I will inform you of the exact place some days in advance this event. The place will depend on the number of attendees. ✨✨✨✨✨✨✨ ### **🎟️ What is included?** 🟢 **2 HOURS TO HAVE FUN!** 🟢 **15 mins warming-up creative activity and paper material**🖌️🎨 🟢 New friendships and **conversations in ENGLISH** in a relaxed atmosphere 🟢 **Souvenir picture** with you and the rest of Art Lovers 📷 🟢 Exclusive **access to our Art Lovers Community** on which you will receive: ***\~\~\~ Drawing challenges,*** ***\~\~\~ Training content,*** ***\~\~\~ FREE Entries only to members*** ***\~\~\~ Drawing Competitions*** 🟢 Time to **create alongside fellow artists and amateurs** 🟢 The freedom to **work at your own pace** 💃🕺🎈 ✨✨✨✨✨✨✨ ### 🖼️**Art Materials?** Bring your own practical art materials to be adaptable to sketch on a coffee table. Like your sketchbook, pencils, watercolor, markets, pencils, your Tablet..etc ✨✨✨✨✨✨✨ ## **See you to Paint, Draw, and drink together!🌟☕🍷🍪🍰**
[UTRECHT] Eenentwintig Utrecht Bitcoin Meetup @ dimS (Amersfoort)
[UTRECHT] Eenentwintig Utrecht Bitcoin Meetup @ dimS (Amersfoort)
Geen (geplande) workshops of lezingen, maar mocht je iets leuks te melden of te leren hebben voel je vrij om dit te delen. Of kom gewoon gezellig langs om mede-bitcoiners te ontmoeten bij deze Eenentwinting Utrecht meetup bij dimS Eten en Drinken in Amersfoort (op loopafstand van Amersfoort Vathorst).

Reason Events Near You

Connect with your local Reason community

Sunday Brunch
Sunday Brunch
Sleep in on Sundays. When you've had your fill of pajama-time, roll out and have some tasty brunch with your fellow Humanists!
Free In-Person Meeting: Get Over Losses & Betrayals, Build Lasting Relationships
Free In-Person Meeting: Get Over Losses & Betrayals, Build Lasting Relationships
This is a free, in-person meeting on the subject of betrayals, losses and how to get over them so you can build lasting relationships. Burdened by a stressful relationship? Unhealthy relationships can trigger feelings of anger, despair or self-doubt. They can create dwindling spirals of fights and seeking to make-up, or trying to “pin the blame” on someone or something. If you don’t find the RIGHT reasons, or select the correct sources of the problem, the problem can just get worse and worse. Whether in love or personal ties, with friends or at work, our life really IS affected by the quality of our relationships. Good ones can promote pleasure and survival while less optimum ones can lead to annoyance, anger, self-doubt, stress, or even affect our health and ability to survive well. Whether you are suffering from a divorce, or a painful break-up, don’t know who to trust (or who to CHOOSE) as a partner, friend, boss or employee - the anxiety of relationship troubles can really make a mess of things. Maybe you’ve suffered a betrayal, or are dealing with hostility or criticalness or invalidation. Dwindling relationships can involve destructive behavior, where we hurt those we love, or start succumbing to self-destructive thoughts, attitudes or behaviors that spiral out of control and affect much more than our immediate relationship. Past losses in love or life can affect how we act or react to new people and situations and hold us back from even starting to create new, possibly great relationships! How can one get back onto a saner course of action? Come to our Meetup, where we can introduce you to some of the knowledge, tools and techniques of the breakthroughs in the field of the mind that we can apply to this ever important area of life: human relationships! Break free from self imposed limitations Here we will discuss: • How to “erase” the trauma of past hurts and betrayals so that one isn’t always repeating past mistakes. • Why and how do the negative emotions of others affect you? • Why is my partner withdrawing and what can I do about it? • Why do we sometimes feel compelled to hurt the ones we love? • Fights & arguments - what's really behind them? • What underlies “corrosive criticism” or the need to invalidate self or others? • How one can stably change one’s outlook on life so they can affect positive change? • Where do compulsive destructive behaviors come from and what can be done about them? • How to form closer bonds & keep growing the relationships with the people you care about? • How to enhance one’s own ability to survive and create positive healthy relationships whether in love, family & friendships or in work, business or one’s career? Relationships can be hard and life itself IS challenging. Why not arm yourself with the knowledge and breakthroughs that have been made about the mind, mental reactions & interpersonal relationships, so that one has better awareness and control over themselves and life in general. Learn where painful experiences are “stored” and how they can unknowingly affect us. You will also find out how one can “erase” those past painful experiences so that one is free to move forward without being tripped up by the past. Learn too, about what can lead some people to become “toxic” personalities and how to identify those traits in others so you won’t be tripped up trusting the wrong person. Our free Meet-ups occur in a safe environment where one can learn, without fear of judgment or criticism, and without the recommendation of harmful mental techniques or therapies, just how YOU can get yourself onto a happier & more successful path: in love & in life. We look forward to having you join us! This class is sponsored by the Dianetics & Scientology Life Improvement Center of Central Ohio.
Psychic  Fair
Psychic Fair
We will have our certified mediums available and you can receive 3 10-minute readings for $20. To keep you safe, we will be following all CDC and Health Dept. guidelines at our psychic fair today. Sitters and readers required to wear a mask. We will maintain a minimum of 6 foot physical distance during readings. Please, if you can, bring your own portable chair to use during your readings. Please note that we are at our wonderful new home at Unity of Columbus, 4211 Maize Road, Columbus, OH
Fun & easy way to play more tennis (read event description)
Fun & easy way to play more tennis (read event description)
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
Melancholia
Melancholia
Be prepared for an entirely different type of sci-fi movie! Unofficially, the second movie in director Lars von Trier's "Depression Trilogy," 2011 Melancholia depicts the events that occur before a rogue planet is about to collide with the earth. Considered by many to be a masterpiece, the film was included in BFI's 2022 Sight and Sound Poll of the greatest movies of all time. It is available at the library as well as on Kanopy.
Speak Easy (Storytelling)
Speak Easy (Storytelling)
The topic for July is "Shoes" Speak Easy: true stories, told live. The idea is simple: an audience, an open microphone, and great stories. Hilarious, gripping, poignant- it's up to you. Audiences are invited to come to listen or come to tell as folks from all corners of Columbus offer their stories live on stage! Held at Wild Goose Creative's warm, intimate space, this night of tales occurs on the 3rd Thursday of every month. Doors open at 6:30 pm, show starts at 7:00 pm. Please arrive early if you want to tell, as we generally only have room for a limited number of tellers, and the sign-up sheet has a tendency to fill up fast. Formed around the idea that people need stories--they're what hold and draw us together--SpeakEasy celebrates the strangeness and commonness of being human. And in a world of smartphones, Facebook, Twitter, and more . . . it gives people a real, breathing, in-person way to connect. The night is geared for true stories of all kinds, taking the best tales told around kitchen tables, in darkened pubs, on the street corner, and at late-night parties and giving them an audience. Speak Easy is also a great outlet for performers, writers, and artists looking to share their favorite stories and perfect their skills. We strongly encourage tellers to please tell the story rather than read it so we keep within the spirit of good storytelling and stay engaged with the audience. All are welcome. Hang around after the show for a drink and build community!
Stop Guessing: How to Measure and Improve LLM Outputs
Stop Guessing: How to Measure and Improve LLM Outputs
Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on. That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable. In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork. This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it. We’ll cover: * Why “it looks good” is not enough * How to improve prompts by changing the input, context, and constraints * How to compare LLM outputs more systematically * Basic evaluation techniques for accuracy, consistency, and usefulness * How embeddings, cosine similarity, and scoring can help evaluate results * Where automated evaluation works — and where humans still need to stay in the loop By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve. 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.