“I think that quantifying things that don’t have units is rarely fruitful” wrote on Twitter @UnlearningEcon (this was in the context of our discussion of Dani Rodrik’s Economics Rules). The following exchange went like this: @Peter_Turchin: “But where do units come from? It̵

  Earlier this month we ran a semi-annual general meeting of the Seshat project in Santa Fe, New Mexico. This came about because prior to our own meeting, many of us participated in another workshop at the Santa Fe Institute, and since we were there anyway, we decided to stay in