This is great and congrats on the success. Many years ago I tried starting a cybersecurity reading group in my city since the startup I was working at was small and people there weren’t interested in that topic. I got a lot of very green, aspiring and non-professionals to show up. We couldn’t really agree on where to start and people had different ideas of where to focus or even how much they wanted to contribute. Mostly people wanted to hear a summary and didn’t really put in the kind of effort that I had hoped. It didn’t last long. Congrats again on making it 5 years and covering so much ground.

Thank you! I think the biggest factor for us was that most attendees already had some technical baseline. That makes it way easier to pick papers and have productive discussions. A cross-experience group sounds much harder. We occasionally have non-technical people who attend (e.g., designers), but they usually are very eager to learn. The guided series format might have helped in your case, where you pick the topic and sequence upfront so there's less debate about direction each meeting. Honestly, just getting people to show up is hard at first, so the fact that you got it off the ground at all says something.