To what extent does academic success follow success? Drawing on a dataset of mentor-mentee relations and their citations, Ye Sun, Fabio Caccioli, Xiancheng Li and Giacomo Livan suggest the dynamics of citation and wealth inequality are surprisingly similar. Rankings are ubiquitous: every week, lists of best-selling records, movies, and books are released, and in sports like tennis, athletes are ranked based on their performance in major tournaments. While we know there is more to a song, book, o...