Sofy will organise a round table discussion upon a new book by professor emeritus Kaarlo Tuori, Advanced Introduction to Legal Positivism, and his 2021 book Properties of Law, October 22 2025 from 2 PM to 5 PM.  Aside from the author himself, discussing the book will be a distinguished cast of Sakari Hänninen, Juha Karhu, Martti Koskenniemi, Visa Kurki, and Eerik Lagerspetz. The event will be held in Porthania lecture room 545, University of Helsinki, but it will also be possible to participate remotely via link that will be published later along with the exact programme. We wish you to sign up for the event via this link, because it helps us to estimate the number of participants: https://elomake.helsinki.fi/lomakkeet/136625/lomake.html