Start of the second week of the Winter School on Statistical Mechanics, Nonequilibrium Processes and Probability, which takes place February 17-28, 2025. All information available at https://sites.google.com/view/winterschoolsapienza/home?authuser=0. The school is part of the activities of the Dipartimento di Eccellenza 23-27, Project B83C23001390001 and it is co-funded by the European Union - Next Generation EU through ERC CoG KiLiM 101125162, PRIN 2022 77WX43 and by INdAM.