History by the numbers? [Social Sciences]

Turchin et al.'s (1) "Global History Databank" is an exciting project. However, we are not convinced that their principal component analysis (PCA) succeeds in discriminating between competing historical hypotheses. We also have concerns about their missing data imputation strategy. Turchin et al. ran PCA on nine "complexity characteristics" (CCs), and...

https://ift.tt/2txo7vx