With regards to case collection, Gary King, Robert Keohane, and Sidney Verba warn towards "picking out over the dependent variable". They argue one example is that researchers are not able to make valid causal inferences about war outbreaks by only taking a look at instances in which war did materialize https://hiresomeonetowritemycases48366.spintheblog.com/30249652/new-step-by-step-map-for-hbs-case-study-solution