Regarding case variety, Gary King, Robert Keohane, and Sidney Verba warn in opposition to "selecting over the dependent variable". They argue for example that scientists are not able to make legitimate causal inferences about war outbreaks by only considering cases wherever war did take place (the researcher should also have https://casestudywritingservice54592.nizarblog.com/33056522/top-hire-for-case-study-writing-secrets