When it comes to case collection, Gary King, Robert Keohane, and Sidney Verba warn towards "picking out over the dependent variable". They argue such as that researchers are unable to make valid causal inferences about war outbreaks by only checking out occasions in which war did happen (the researcher https://rylaneiljc.csublogs.com/40408405/5-tips-about-case-study-help-you-can-use-today