The scale at which humans cooperate expanded greatly over the last 10,000 years—from hundreds of people to hundreds of millions. One popular theory that explains this dramatic increase in the scale and complexity of human societies is known as the Big Gods hypothesis. The basic idea,

When I became interested in what eventually became Cliodynamics, initially I thought that I would just play with some mathematical models of historical processes, because I had read many times before that there is very little quantitative data in history. In fact, the opposite is true

On Tuesday I am traveling southwest to visit several universities in Arizona and Southern California. Here’s the schedule of lectures that I will be giving: Wednesday Feb. 15 at 12:00 noon: Colloquium on Evolution of Social Complexity (Arizona State University) Tuesday Feb. 27 a

Philosophers, historians, and social scientists have proposed a multitude of different theories trying to explain the rise of huge complex human societies over the past few millennia. Was the primary driver the invention of agriculture, which seems to be the default explanation held b

Kate Kirby and I have organized a symposium on databases in Cultural Evolution for the first annual meeting of the Cultural Evolution Society in Jena, Germany. The symposium will run in two one-hour sessions on Sept. 14 and Sept. 15 (according to the tentative meeting program that I s

When I visited Vienna for the first time many years ago, I remember experiencing a feeling of “cognitive dissonance.” On one hand, one hardly ever hears about Austria in the news—it’s one of those small, insignificant European countries (this should not be taken as a put-down; in fact

It’s been a long haul. Six years ago we launched the project that we eventually named Seshat: Global History Databank. Three years ago, following a series of workshops that designed the overall structure of the databank, we started collecting data. By January 2015 we had 30,000 record

Dear friends, lovers of history, and those who care about the world we live in: Please join me in supporting an international project that seeks to understand how human societies evolve. I am donating $10,000 from my book revenues this year to Seshat: Global History Databank, and I ch

A week ago the urban archaeologist Mike Smith wrote a scathing post about a new article in Nature.com’s journal Scientific Data. In the article, Meredith Reba and coworkers report on how they “spatialized” the dataset on urban settlements, based on previous publications by Tertius Cha

An article published this week by Nature is generating a lot of press. Using a sample of 93 Austronesian cultures Watts et al. explore the possible relationship between human sacrifice (HS) and the evolution of hierarchical societies. Specifically, they test the “social control” hypot