Physics

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).

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).

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.

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.

IMPORTANT: You must also register at this Eventbrite link: [Sony Presents: Forever in Focus Wedding and Portraiture Event Tickets, Thursday, Mar 26 from 1 pm to 6 pm | Eventbrite](https://www.eventbrite.ca/e/sony-presents-forever-in-focus-wedding-and-portraiture-event-tickets-1983966356780?aff=oddtdtcreator&keep_tld=true) Forever In Focus: A Sony Alpha Community Event for Wedding & Portraiture Photography and Videography Professionals *We invite you to join us at Forever in Focus, an immersive experience that blends realistic hands-on experiences with expert teachings. With a focus on both photography and videography, capture content via models in cultural wedding apparel, as they walk down the aisle, enjoy their first dance and cut the cake.* *Discover tips and tricks for capturing once-in-a-lifetime photos and videos with seasoned industry experts who are ready to interact with you.* *Check out Sony's latest and greatest gear, with an emphasis on premium G Master lens technology. Experience how G Master lenses give you the edge to capture moments with confidence, speed, and creative freedom.* *Explore hybrid photo and video workflows, low-light performance, advanced autofocus capabilities, and efficient production techniques.* *Whether you’re refining your workflow, expanding into hybrid storytelling, or considering your next system upgrade, this is your opportunity to test gear in realistic conditions, connect with fellow professionals, and discover tools designed to help you deliver exceptional results for your clients*.

Hello everyone, **\*Please kindly read carefully-thank you\*** Join us for a fantastic and hilarious evening of mix, mingling, getting to know each other; and of course a super funny comedy show at **Absolute Comedy!** \*Joined by my other social groups too so we can anticipate a fabulous turn out and night **Event Fee:** I will be in the front lobby (look for me-Steve & group) Early Bird Price: **20 dollars in advance (e transfer any day prior to the day of the event)** Day of Event Price **25 dollars when you arrive (HST is included)** Cash or through e transfer to: steveflemming11@gmail.com More event details below: Sincerely, Steve Flemming (Organizer) **Event Details:** **Thursday Night Comedy Show! (at Absolute Comedy) (Yonge and Eglinton)** \*Please arrive between 7:30 & 7:50 for a little pre-show mingle which will be a great way to get to know everyone before the show starts \*You will see us in the front bar area of the venue when you first come in \*Plenty of parking on Yonge street and in residential area \*Walking distance (3-4 minutes) from the Yonge & Eglinton subway station \*You will be expected to purchase minimum beverage and/or appetizer once inside the comedy show to support the staff and comedians \*Dinner menu is also provided as well, so bring your appetite if you like :) **Going to be a great night gang with lots of laughs!**

**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)

## **Let’s Make Something Real** You’re invited to **Session 001**—the kickoff of a new collaborative series designed for one thing: **Pure Creation.** We’re stripping away the gatekeeping and the endless tutorials. This isn’t a masterclass; it’s a digital jam session where the goal is to walk out with a track that has everyone’s DNA on it. Whether you’re a professional sound designer or you just bought your first MIDI controller yesterday, if you have ideas, we want them in the mix. ### **The Vibe** * **Genre Agnostic:** From lo-fi beats and cinematic soundscapes to heavy techno or glitch—if it sounds good, it stays. * **DAW Agnostic:** Logic, Ableton, FL Studio, Bitwig? It doesn't matter. Use the tools that help you speak. * **Creation Over Teaching:** We believe the best way to learn is by doing. You’ll pick up tricks by osmosis, but our primary mission is the "Export" button. * ### **How It Works** We’re keeping the workflow lean so we can stay in the flow state: 1. **Bring Your Setup:** Laptop + DAW + Headphones. Ensure you’re ready to make noise the moment you plug in. 2. **The Master Mix:** We’ll have a central project running. 3. **The Drop:** We’ll use a shared Dropbox folder to swap stems, loops, and one-shots in real-time. You create a part, drop it in, and watch the track evolve. ### **The Essentials** * **Who:** Creatives, noisemakers, and rhythmic thinkers of all skill levels. * **The Goal:** Ensure every person in the room makes a tangible contribution to the final piece. * **The Energy:** High vibes, zero ego, and a shared love for digital alchemy. **Ready to plug in?** We’re keeping these sessions intimate to ensure the best workflow. Location and final logistics will be sent once your spot is confirmed. **"Good energy, good people, and most importantly, good music."**

TFS is delighted to present a sparkling screwball double feature starring one of classic Hollywood’s great on-screen pairings. Cary Grant and Irene Dunne bring wit, elegance, and perfectly timed comic chaos to *My Favorite Wife* (1940) and *The Awful Truth* (1937) - two films that showcase why their chemistry remains so irresistible. Sharp dialogue, romantic mischief, and laugh-out-loud moments abound in this celebration of screwball comedy at its finest. Please note that this is a paid event. You can purchase tickets online or at the door. Tickets: https://paradiseonbloor.com/purchase/425762/

Join your community of fellow Intuitives and MBTI nerds for a casual evening of engaging conversation. We get together every second Sunday – with a mix of regulars and new friends. There is no fee to attend, though we ask that you support the venue by ordering something to eat or drink. **Feel free to contact event host B. via Facebook/Meetup messenger, or text/call 416-712-8635 for directions**. About the venue: The Pint Public House Nearest Subway: Union Station Map / Directions: https://maps.app.goo.gl/G5GfXDSQXeifJ5ot5 We make an effort to find pubs that are quiet and introvert friendly, with a section to ourselves. We make no effort to muffle our extroverts, but should they get out of hand, our resident INTJ will use their death stare, to pull them back in line.

For March, we'll read A Room with a View by E.M. Forster 240 pages First published in 1908 This Edwardian social comedy explores love and prim propriety among an eccentric cast of characters assembled in an Italian pensione and in a corner of Surrey, England. A charming young English woman, Lucy Honeychurch, faints into the arms of a fellow Britisher when she witnesses a murder in a Florentine piazza. Attracted to this man, George Emerson, who is entirely unsuitable and whose father just may be a Socialist. Lucy is soon at war with the snobbery of her class and her own conflicting desires. Back in England she is courted by a more acceptable, if stifling, suitor, and soon realizes she must make a startling decision that will decide the course of her future: she is forced to choose between convention and passion. The enduring delight of this tale of romantic intrigue is rooted in Forster's colorful characters, including outrageous spinsters, pompous clergymen and outspoken patriots.

Hello everyone, Plan to join us for a great night of mix, mingling and **Saturday Bowling!** \*Joined by my other groups to so we can anticipate a terrific turn out. \*Event details below \-\-\- **Location:** **Play Time Bowl** 33 Samor Rd, North York, ON M6A 1J2 **Free Parking** found all around the location \-\-\- Sincerely, Steve Flemming Organizer/Host [meetup.com/soulcity/](http://meetup.com/soulcity/) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Event Details:** **SATURDAY BOWLING with SINGLES and FRIENDS!** **(Saturday March 28th)** -A fun, well organized event with lots of socializing, mingling and of course ten pin bowling! -This event is totally co-ed for all levels and all ages -Bring along your friends if you like or come on your own; either way always a great time \*Dinner menu available too (Optional) -Free Parking as well all around the venue \-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Event Fee:** 40 dollars (Includes Social Mixer, 90 minutes of Bowling, and then more mingling after (optional) Also includes HST & Shoe Rental in the price) \*Cash only when you arrive or by e transfer in advance: **[steveflemming11@gmail.com](http://steveflemming11@gmail.com)** \*10 dollars if you wish to just take part in the (pre and/or after) mix/mingle party but not the bowling \-\-\-\-\-\-\-\-\-\-\- **Please arrive between 4:00 pm & 4:30 pm**-so I can secure lanes for everyone (You will see me (Steve Flemming) (and the group) when you walk in through the front entrance in the main bar/seating area \*We will have time to introduce ourselves and get to know each other before we begin the bowling :) \-\-\-\-\-\-\-\- **Friendly Reminders:** Located just south of 401 and just off of Dufferin (on west side) \*Parking is Free (located on both sides of building) Closest subway station is Yorkdale Mall -10 minute walk from the mall subway station \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-

We experience and produce humour through the memes we spread and the inside jokes we share with friends, and we even use it when facing life’s most difficult challenges. Humour can help us bond, cope, and rethink our assumptions. But what makes something funny? Why do humour and the laughter it produces play an important role in our culture? One answer is that humour can help break down barriers and bring people together. As Victor Borge once said, “Laughter is the shortest distance between two people.” Humour can also be used as a social instrument to call out misconduct. How is it that humour fosters community and division at the same time? At our next Curiosity Café, we’ll revisit the silly and serious sides of humour, and explore the role that humour plays in how we connect, think and live. Together, we’ll discuss questions like: * How does humour help break down barriers and bring people together? * Does humour have a unique ability to help us find common ground and strengthen relationships? * On the other hand, does how we respond to humour have implications for our social capital? * How might jokes or humour be perceived by people from different backgrounds? * Is it possible to create humour that’s both provocative and inclusive? * How might humour give us a sense of control? * What is or should be the role of comedy in society? Join us for a lively and collaborative conversation moderated by Erik Ai and Dylan Michels, where we’ll explore questions, new and old, and (hopefully) share plenty of laughs along the way. **Space is limited!** **Please obtain a “Pay-What-You-Can” ticket from Curiosity Café at [this link (click here)](https://www.eventbrite.ca/e/curiosity-cafe-revisited-no-laughing-matter-humour-in-our-lives-tickets-1985339500891) to attend this event. You need a ticket to be admitted.** See the above link for more info about tickets and other options including a limited number of free tickets. Come and hang out with us, grab food, and read through our handout from 6-6:30pm. Our structured discussion will run from 6:30-8:30pm with a 10 minute break in the middle. Hope to see you there! ***__________________________________________________________________*** This event is brought to you by [Being and Becoming](https://beingnbecoming.org/), a Toronto based non-profit. We aim to create community around exploring everyday concepts and experiences so that we may live more intentional, thoughtful, and meaningful lives. We use philosophy as a tool with which we can come to a richer understanding of the world around us. By offering activities, spaces, and other opportunities for conversation and co-exploration, we hope to enable the meeting and fusion of individuals and their ideas. Everyone is welcome, regardless of background: indeed, we believe the journey is best undertaken alongside explorers from a variety of disciplines, cultures, backgrounds, and experiences. Find out more about Being and Becoming [here](https://beingnbecoming.org/). About the Curiosity Café Series: For those of you who haven’t had the opportunity to join us at our Curiosity Cafés and are wondering what they’re all about: every two weeks, we invite members of our community to come out to the Madison Avenue Pub to engage in a collaborative exploration of our chosen topic. Through these events, we aim to build our community of people who like to think deeply about life’s big questions, and provide each other with some philosophical tools to dig deeper into whatever it is we are most curious about.

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

Ready for a night of music, laughter, and fun? Join us at Thunderwing Brewery for Music Bingo — a lively twist on classic bingo where songs replace numbers and good vibes are guaranteed! RSVP to secure your spot. Text Renee (614-257-9389). (Headcount needed to make sure staffing can accommodate the group) Arrive early to get a seat - **bring a camping chair for extra seating.** Often the brewery has food trucks or you can bring in your own food. Bonus - You can bring your dog!

**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

I hope you'll join me at [Carfagna's](https://carfagnas.com/) AMAZING complex on Gemini/Polaris. *Live, local acoustic music during dinner.* **Come by early for happy hour til 6pm.** Or, join us for dinner; show time is 6-9PM, Thursday. Reservation at 6pm for 12 under Michele Z (overflow can linger near the bar). Each Thursday they host live music in their beautiful upscale bar at **Carfagna's Ristorante**; but you need to check out everything this place has to offer Italian under one roof!!

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow

Enjoy a bit of Columbus culinary history at Carfagna's market, wine bar and ristorante. We will gather for a glass of wine or two in the wine bar at 6:30 with dinner at 7pm. Arrive early if you like, shop and place your items in a cooler in your car. This is a pay-on-your-own event. I will have a reservation for twenty (20) at 7pm. Message me if you want to be on my table. Keep your reservation up to date as the Attendance and Release of Liability provisions are enforced, including the 48 hour No-Show Rule. See the first page of Group Page for details. Read about the history of Carfagna's here and also see their weekly specials. https://carfagnas.com/about-carfagnas/

Over 50 Happy Hour – Liberty Tavern Polaris Join us for a fun and relaxed Over 50 Happy Hour on Friday, April 10th from 4:00 PM – 8:00 PM at Liberty Tavern Polaris. This is a great opportunity to meet new people in our age group in a casual, comfortable setting. Whether you’re in your fifties, sixties, or seventies, everyone is welcome. Some people who attend are retired, while others are still working, but we all share one thing in common — enjoying good conversation and good company. If you’re new to the group, don’t worry. Many people attend solo and quickly find it easy to strike up conversations. The goal of this happy hour is simple: meet people, socialize, laugh, and enjoy the evening. We’ll be gathering at Liberty Tavern Polaris, a welcoming tavern with a warm atmosphere, great food, and a bar perfect for relaxed conversation. Feel free to come when you can and leave when you want. Some members arrive right at 4:00 PM, while others stop by later after work. There’s no formal agenda — just friendly people getting together to enjoy a Friday evening. Location: Liberty Tavern Polaris 2170 Polaris Parkway Columbus, Ohio Time: Friday, April 10 4:00 PM – 8:00 PM Come join us for a drink, good conversation, and the chance to meet some great people in the 50+ community.