Learning

This is a ticketed event. Please register at [this link](https://luma.com/e69uao09). ​In his talk, Samuel Simko from ETH Zurich will present his recent work on adversarial defenses for LLMs, developed with the Jinesis Lab (University of Toronto). The talk will cover a series of approaches, ranging from triplet-based contrastive learning defenses to honeypot-style defenses designed to avoid worst-case behavior. He will also discuss patterns observed in contest-winning manual jailbreaking prompts, ideas for tamper-resistant safeguards, and the current limits of attacks, defenses, and evaluation methodologies. ​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​If you can't attend in person, join our live stream starting at 6:30 pm via [this link](https://www.youtube.com/@Trajectory-Labs/live).

Join us this week as a guest to overcome your fear of public speaking and speak with confidence! We hold weekly meetings on Thursday nights to facilitate impromptu speaking, debates, discussions, and prepared speeches to practice our skills and give each other constructive feedback. We are a friendly group of all ages and backgrounds in the GTA, where we help our members and guests in their personal and professional development. We typically meet at the Etobicoke Civic Centre with lots of free visitor parking. You can join us as a guest anytime you want, for as long as you would like, to see what Toastmasters is all about! Come and join us this Thursday to become the best version of you. The theme for this week's meeting is TBD! Join us to practice your improv. speaking skills, debating skills, and to improve your public speaking abilities. If you're interested in attending this meeting, please contact us through our "Contact Us" form on http://goodyeartoastmasters.com/ See you there! ABOUT GOODYEAR TOASTMASTERS \*NOTE\* We are now back in-person at the Etobicoke Civic Centre! Visitor Parking is free. Simply let the Security Person know you're here for a Toastmasters meeting. • Our meetings start at 6:45 PM and lasts for about 2-hours. We suggest you arrive earlier to settle in and network before we begin. • It's free to attend as a guest and you can join us as many times as you would like. For the full access to the Toastmasters Pathways Programme, however, you will need to join as a member and pay a membership fee. • Don't worry about the low attendance numbers on Meetup. Members do not RSVP here. We use the club website instead. Meetup is primarily a place for us to reach out to newcomers such as yourself!

This is a ticketed event. Please register at [this link](https://luma.com/lpikw708). ​Ryan Faulkner explores various papers that address cooperation and safety in multi-agent LLM simulations. Some of the core topics will include: * ​Moral behaviour of agents in high-stakes, zero-sum, and morally charged social dilemmas * ​Governance and sanctioning dynamics and the ways that LLM agents often fail to cooperate and free-ride in common-pool resource game * ​Mechanism design interventions like mediation, contracts, and elected leadership are explored to steer agents toward safer outcomes. ​This research also reveals that LLMs adapt their behavior based on awareness of their conversational partner's identity. ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​​​​If you can't make it in person, feel free to join the live stream starting at 6:30 pm, via [this link](https://www.youtube.com/@Trajectory-Labs/live).

**PLEASE READ:** This event will show as sold out on meetup since this event has a limit of 5 spaces and tend to book up. You can **SECURE** your seat through purchasing a ticket on https://lvlupgames.ca/products/learn-to-play-d-d-adventurers-league-dragon-delves-death-at-sunset in advance. **If you can add it to cart on the site that means the spot is still available!** **Description** Hello adventurers! Have you ever wanted to experience the world of Dungeons and Dragons but not know how to get started? In this event we will teach you character creation, core game mechanics, and go through a 60-90 minute one-shot scenario for you to test out your newly created character! These sessions are meant to be **introductory friendly for new adventurers to get their foot in the door of D&D.** With you ticket you'll receive: * Character sheet * Pencil * Set of 7 dice (D4, D6, D8, D10, D12, D20, D%) * Access to the Players Handbook **Game Master:** Nick (He/Him) Nick, has been a Dungeon Master for 10 years, experienced in many mainstream and indie RPG systems. Outside of RPGs, Nick has several years of theatre experience, being an actor in his youth and continuing his studies even now. He is upbeat and theatrical, standing and acting out dramatic action sequences and quiet emotional scenes. More than anything, Nick always tries his best to deliver an experience, something that will be a special memory for everyone.

Join us for an evening of French conversation at B Espresso Bar in the atrium of the Toronto Royal Conservatory of Music (near St. George station)!
We welcome all levels of French, and it's free\*.
Venez pratiquer votre français! \*While there is no fee to attend this event, guests are expected to purchase something from B Espresso Bar, in accordance with RCM's restrictions on usage of the cafe atrium space. **Building location:** The Royal Conservatory is at 273 Bloor St W, between Varsity Stadium and the Royal Ontario Museum (ROM). There are entrances off Bloor St. and Philosopher's Walk. If you enter from Bloor St through the large glass doors, follow the hallway on the left beside the staircase and turn left at the end. (Closest TTC: St. George) **Notes and restrictions:** The host may or may not attend this event. Attendees are encouraged to seat themselves at two or more adjacent tables, as needed. Please form groups of 6 people at each table; do not rearrange chairs and tables to accommodate more people, as this obstructs the narrow walking space. Guests are expected to order something from the cafe, and are asked to please refrain from bringing outside food or drink. Attendees must leave the building at 8pm when the cafe stops serving. **Contributions:** If you are a regular with us and would like to support the group, please send any contributions by e-transfer to [diskutomeetup@gmail.com.](http://diskutomeetup@gmail.com.) The yearly donation goal and amounts received year-to-date will be tracked anonymously on [this google sheet](https://docs.google.com/spreadsheets/d/18GfqYsis8Cf2XGg4KsKQJsY_0Fv3bsSQHwJAxvC1Km8/edit?usp=sharing). Thank you so much for your support.

Observability is supposed to help us understand our systems but for many teams it has quietly become one of the most expensive and least flexible parts of the stack. Plenty of organizations take polished SaaS platforms like Datadog to get real value quickly early on, only to hit the same wall later: runaway costs, pricing tied to architectural decisions, and vendor lock-in so strong it makes Rogers and Bell both blush. In this talk, I’ll walk through a real-world case study of a JVM-based production system that migrated away from a Datadog-centric observability setup to an open-source, OpenTelemetry-based platform. We’ll dig into the why behind the move, the architectural decisions that mattered, the mistakes along the way, and how the team ended up with pragmatic visibility into latency, errors, and resource usage at a fraction of the cost. The second half of the talk is practical and forward-looking. I’ll show how OpenTelemetry unlocks real choice by acting as a neutral data plane for your telemetry. From there, we’ll look at modern, off-the-shelf observability backends you can plug in within minutes without rewriting applications or installing new agents. Want to dual-write, swap vendors, or route data somewhere new? This is how you do it without a big-bang rewrite or another long-term commitment with a new vendor. This session is for engineers and CEOs who are feeling the observability cost squeeze, want leverage back from vendors, and are looking for realistic ways to modernize monitoring without lighting their entire stack on fire each time they decide to change their tools of choice. **About the venue** Free Times Cafe has bistro-style seating and a full food and drink menu. Please consider helping to support the venue by planning to have supper during the talk. **Speaker Bio** Alexei Zenin is a Platform Engineering Consultant based out of Toronto, Canada. Over the course of his career he has worked across the Healthcare, Marketing, Video Games, and Banking industries. He loves to tackle hard problems in the distributed systems space with a focus on scaling platforms both from a technical and process perspective. He is a strong advocate for highly maintainable and well tested code while at the same time pragmatically delivering value to the end user. He has contributed to the broader tech community, namely to Confluent’s blogs on Apache Kafka, spoken at Current 2022 in Austin, Texas, and spoken at XP Game Summit 2025 in Toronto, Canada. During his 5 years at Uken Games he contributed to several games like Who Wants to Be a Millionaire and Jeopardy. One title of note he saw from inception to completion was a game for Tim Hortons built right into the official app, Tim’s Word Challenge. Millions of Canadians have played it along with their morning coffee. He also got to work with Netflix on several unannounced games during his time at the studio. Currently, Alexei is working with various clients, both large and small to modernize and streamline their platforms with the most appropriate tools and practices. Outside of his professional life, he gives back to his community by volunteering at UofT. He also enjoys paddleboarding and attending live rock concerts to reset after long coding sessions.

**SUBSCRIBE TO [THE MAILING LIST](https://torontorationality.beehiiv.com/). EVENTS ARE NO LONGER POSTED HERE.** ​Arguing about important things doesn’t usually lead to people changing their mind. Double Crux is a technique for making discussions more productive and understanding the actual reasoning of those who disagree with us. Sometimes it even helps to better understand the foundations of your own beliefs. Together, we'll learn about [Double Crux](https://www.lesswrong.com/posts/ya59PtGeYnCG25eWn/double-crux-in-a-box), and then break into pairs with someone we disagree with to practice finding out why our views are different and what might change our minds. ## Location Enter the Mars Atrium via University Avenue entrance. We'll meet at the food court in the basement. I'll be wearing a bright neon yellow jacket. ## Detailed Directions to the Food Court Enter from University Avenue and walk east until you see escalators. Take the escalators down. The food court is to the east of the escalators. If you are lost/confused, ask a security guard to direct you to the food court. [This event is cross-posted from LessWrong.](https://www.lesswrong.com/events/wuMwSJJEKZHfccoRs/toronto-acx-meetups-everywhere-spring-2025)

Save $15 when you use the promo code: **CNY26** Get Tickets Here: [https://checkout.square.site/merchant/MLN3RJDD1RNR6/checkout/MPEWQHUB5YQM55BZSUMRGZ7T](https://checkout.square.site/merchant/MLN3RJDD1RNR6/checkout/MPEWQHUB5YQM55BZSUMRGZ7T) BR21 Lunch & Learn Series: **Watercolor Workshop & Networking Lunch** **Creativity Meets Connection** Join BR21 Toronto and PerCreative Studio for a refreshed "Lunch & Learn" designed for the modern professional. This session prioritizes hands-on learning and high-value networking. **Event Details** **Date:** Friday, March 27, 2026 **Time:** 12:00 p.m. – 2:00 p.m. **Location:** JC's Grill House – Park Inn by Radisson 555 Cochrane Dr, Markham, ON L3R 8E3 **Parking:** Free on-site parking. **The Experience:** The Workshop: Led by professional instructor Perry Chow of PerCreative Studio, you will dive into watercolor fundamentals in a beginner-friendly environment. **The Networking:** Connect with entrepreneurs and professionals focused on collaboration. **The Food:** A light selection of food and drinks will be served to maximize your time for painting and networking. **Registration & Payment**: $45.00 (Includes all art supplies, instruction, and light lunch) ***What to bring: Simply your business cards and your creative spirit!*** **Registration Deadline:** Wednesday, March 25, 2026, by 5:00 p.m. (or while seats last). **Questions?** Contact Perry at 647-987-4072 for more information.

**Krav Maga (15+) at the Miles Nadal JCC** Build confidence, improve fitness, and learn practical self-defence skills in a safe and supportive environment. This dynamic program introduces the core principles of Krav Maga with a focus on real-world scenarios, situational awareness, and mental resilience. Through guided instruction and hands-on training, you’ll develop effective techniques for striking, defending, and reacting under pressure — all while enhancing strength, coordination, and conditioning. No prior experience necessary — just bring a willingness to challenge yourself and grow. Join our welcoming community and start your Krav Maga journey today! *** **Event Details** **Location:** Miles Nadal JCC — 750 Spadina Ave. (enter through Spadina doors) **Dates & Times:** Spots are open in upcoming sessions — join anytime! Late registration is welcome, and your fee will be automatically prorated. Drop-in options available. **Registration is required in advance** > Please note: RSVP’ing on Meetup does not reserve your spot. > [Register online](https://app.amilia.com/store/en/miles-nadal-jcc/api/Activity/Detail?activityId=yn6KVVL) > ☎️ Or call 416-924-6211 *** ️ **Fees** • Full-session registration available (prorated if joining late) • Drop-in spots available *** **What to Expect** ✔️ Practical, real-world self-defence skills ✔️ Striking, defending, and reacting under pressure ✔️ Improved strength, coordination, and conditioning ✔️ Supportive, beginner-friendly instruction ✔️ A focus on confidence, awareness, and resilience *** Come ready to move, learn, and empower yourself. We can’t wait to see you in class!

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

Join us for a relaxed evening where traders of all levels come together to meet new people, share market ideas, and talk about the week’s trends and themes. Whether you’re curious about the overall market condition, looking for fresh setups, or just starting out with trading, this meetup is the perfect place to ask questions, learn from others, and build your network. We’ll open the floor for casual discussions on current market conditions, sector rotation, trade setups, and risk‑management practices, while also giving newcomers a simple, jargon‑light way to understand how to get started in trading. Bring your charts, your ideas, and your questions—no sales pitches, no gurus, just honest conversation among people who love trading and learning from each other.

\*These classes are not a language exchange, but instead are meant to be a step in between so that students feel confident maintaining in depth and grammatically correct oral conversations outside of class\* \***Meetup event numbers only tend to show new students registering and do not include returning students attending class.** **Per class, there is an average of 7 students.** The first 2 classes are free and then only cost between $18 and $36 depending on which type of class you want to continue with\* These French, English (For Spanish and French speakers only), and Spanish classes are primarily meant for adults who are travellers, or who are planning to live in a French, English, or Spanish-speaking country. The classes are primarily oral-based through guided conversations. They will teach you how to handle conversations in situations such as **"Going to the Convenience Store"**, **"Making Plans"**, **"Negotiating Prices"**, and **"Going out for a Drink"**. To ensure that students get used to using the language automatically, students will learn to maintain contextual conversations with timing before moving on to the next lesson. Call (647)787-9953, e-mail us info@monkeylingo.ca, or visit monkeylingo.ca for more information! **Online and private classes are also available!** No other language classes are as conversational as these ones. We guarantee it! Cheap parking can be found using the "Spot Hero" app.

**Join [TILE.]** at the **most popular Saturday Language Learning Social Event & Party in Toronto! 🍁** **[TILE.] = Toronto International Language Exchange [Instagram](https://www.instagram.com/tilelearning/)** **[TILE.]** now has a **2-for-1 special event,** which includes: **1.** From **[6:30 - 7:15 PM](https://www.meetup.com/english-class-with-certified-award-winning-teacher):** An optional new $5 small group 45-minute **[English language class](https://www.meetup.com/english-class-with-certified-award-winning-teacher)**[ ](https://www.meetup.com/english-class-with-certified-award-winning-teacher)led by a certified language teacher **2.** From **[7:15 - 11 PM](https://www.meetup.com/biggest-language-party-event-social-in-toronto):** Our usual huge group **[BIGGEST LANGUAGE EXCHANGE SOCIAL EVENT AND PARTY IN TORONTO](https://www.meetup.com/biggest-language-party-event-social-in-toronto)** (Cost: *$0-$5\*, see below)* Both events happen Saturday on the 2nd floor of the Madison Pub (14 Madison Avenue). ***Attend either or both events!*** Meet Toronto locals and international friends. Talk to language teachers and speakers to learn English, French, Korean, Japanese, Spanish, and much more! Join us for board games, conversation, dancing, singing, and more! Make sure to get a nametag from one of our helpers. *You **must** read the full event description below before attending. By attending, you agree to all the terms listed.* **[TILE.] Toronto International Language Exchange** event details: * We are on the 2nd floor of the Madison pub on the patio with all the international flags! *The dance floor opens around 10 PM, and the live piano bar singer start around 10:30 on the 1st floor.* * With our night ride promotion, the second event (the 7:15- 11 PM Party & Social event) is **FREE** for women who will be traveling alone at night to promote inclusion and equity\*. This event normally $5. * The cost for the first event (the 6:30 - 7:15 PM English Language class) is $5 for everyone. **PAY** **$5** right at the event by **CASH, CREDIT, or DEBIT**, or **SEND $5 E-TRANSFERS** to: **TILETORONTO1@GMAIL.COM**. You can also support the bar by buying a drink or appetizer. **\*** The second event ends late at night. It is 100% your own responsibility to ensure you get home safe. We can simply waive the $5 event entry/cover fee for women who will be traveling home alone so that they may instead put this money towards taking a safe ride home. \-\-\-\-\-\- **IMPORTANT DISCLAIMER – Meetup Group** By attending any TILE events, including these ones, you acknowledge and agree to the following: * *The organizers and hosts of TILE events are are not liable for any loss, injury, damage, or other unforeseen outcomes that may occur before, during, or after any event.* * *Participation in TILE events is entirely voluntary and at your own risk. You are solely responsible for your own safety, personal belongings, transportation, behavior, and well-being. It is your responsibility to assess the risks involved in any activity or location and to act accordingly.* * *TILE and its organizers do not provide insurance and cannot guarantee the safety, accuracy of information, or quality of venues, third-party services, or other attendees.* * *By attending, you release TILE, its organizers, and affiliates from any and all claims or liability, and you agree to conduct yourself respectfully and in accordance with local laws and venue rules.* * ***If you do not agree with this disclaimer, please do not attend TILE events.***

**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 **Abstract** Web Forms gave .NET developers a powerful abstraction for building reusable UI controls long before design systems were a thing. Web Components finally bring that same idea to the browser natively. This session explores how the Web Forms mindset translates into Custom Elements, Shadow DOM, and HTML templates. We’ll examine how Web Components enable design systems that work across frameworks, how they differ from server‑driven controls, and why they’re becoming a foundational layer for modern UI. Whether you’re maintaining legacy apps or building greenfield projects, you’ll leave with a practical understanding of how to apply familiar patterns in a modern, standards‑based way. **YouTube Link** TBA

If you enjoy knitting, crocheting, working with yarn, this is the group for you. Meet new friends, bring your projects, learn from others.
We normally meet a few times a month during the week from 6-8pm. We will occasionally meet on weekends during daytime hours.

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

**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: Type Annotations with John Cassidy 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

12:45-3:45 in the Meeting Room on the library lowest 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 3 p.m. of that day.

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads**®**, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar