“…Because they are using archaeological data that excludes historical states, Peregrine et al (2004) used 2000 BP as the first data point in their Figure 1. If we include the present as a data point and take into account the fact that planet Earth is now divided into states, assuming it is these polities and not subpolities within these states that are the primary data (see discussion by Roscoe, 2004), then a graph including contemporary states already reaches an average hierarchy of 3 at Time 0 (see Figure 1). This is contrary to their extrapolation of the quadratic fit to the data set made up of polities at 2000 BP or earlier.…”