This meetup is an open get-together for readers of Scott Alexander's blog Astral Codex Ten. We meet in Tiergarten and sit either on comfy grass or on blankets that you bring with you. If you want to make sure you have a blanket, take agency and bring your own. The same goes for everything else you expect to want to have access to whether it's food, drinks, mosquito repellents spray, or more creative items. Be agenty ;)
From Friday August 26th through Monday August 29th aspiring rationalists from all around Europe and beyond will gather for four days at the lovely Lake Wannsee near Berlin to socialize, run workshops, talk, and enjoy our shared forms of nerdiness.
There's more information about the Event at LessWrong.