On October 23, Gábor Lugosi (ICREA-UPF and BSE) gave a talk in the Applied & Computational Math Colloquium at Princeton University. The title of the talk was "Mean estimation: median-of-means tournaments" and is based on joint work with Shahar Mendelson (Technion, Israel), Luc Devroye (Mcgill University, Canada), Matthieu Lerasle (CNRS, France) and Roberto Imbuzeiro Oliveira (IMPA, Brazil).