“…What complicates things is that social dynamics are almost always changing while unfolding. Their non-stationarity originates endogenously, through life cycles (Ellis and Fisher, 1975;Fisher, 1970;Poole and Roth, 1989) or the ambition of social agents to improve the process (Hilbert, 2014;Madsen, Flyverbom, Hilbert, and Ruppert, 2016), or exogenously through external shocks (DeDeo, 2016;Poole et al, 2000). Given the useful properties of stationarity and its rare appearance, it is often swept under the methodological rug and no statistical tests are executed, not even when published under the scrutiny of the world's most highly ranked Journals, (Song, Qu, Blumm, and Barabási, 2010).…”