In 2021, we welcome Yihui Quek (Stanford), Sumeet Khatri (Baton Rouge and Stanford), Giacomo Guarnieri (Trinity College), Nora Tischler (Griffith), Austin Lund (Queensland), Philipp Schmoll (Mainz), Joschka Roffe (Sheffield), Steven Thomson (École Polytechnique), Ellen Derbyshire (Edinburgh), Spyros Sotiriadis (Ljubljana) as postdocs, most already being here. Very warm welcome again.