“…The latter ansatz is often pursued in cases where a perturbation-based approach ( actio est reactio ) is either unfeasible or not constructive. Properties of an interaction can then be estimated with diverse linear and nonlinear, bi- and multivariate time-series-analysis techniques grounded in statistics ( Rodgers and Nicewander, 1988 ; Hamilton, 2020 ), nonlinear dynamics ( Kantz and Schreiber, 2003 ; Datseris and Parlitz, 2022 ), synchronization theory ( Arnhold et al, 1999 ; Pikovsky et al, 2001 ; Stankovski et al, 2012 ; Rosenblum and Pikovsky, 2023 ), statistical physics ( Tabar, 2019 ), and information theory ( Hlaváčková-Schindler et al, 2007 ), among others.…”