World population growth has proceeded in two steeper-than-exponential phases, with an intervening standstill from 1– 400 CE. Our interaction model of population, technology, and Earth’s carrying capacity projects to a peak of 11 billion people by 2100. Yet, our impact on Earth’s biosphere may undo our very existence. Then projections in this book, such as a single world state by 4600 CE, become moot. Over 5000 years, the number of states has fallen and top empire sizes have increased exponentially but also in three phases triggered by breakthroughs in message speed: Runner, Rider and Engineer Empires. This approach can lead to a non-Eurocentric periodization of history, with cut-off dates at 3000 BCE, 600 BCE, 600, 1200, and 1800. Various relationships connect world population and top empire and major city sizes, but they have tended to fail since 1800, as the world becomes a single, rapidly interacting system. A distinction of Talkers, Doers, Regulators, and Followers serves to characterize the internal structure of empires. An initial human self-domestication (slavery) seems to be later followed by self-taming. Lists of world history events put the midpoint of history around 1500 CE.

This chapter provides an overview of each of the book’s chapters and summarizes a key objective of the book, which was to identify three broad phases or periods in the modern history of international commercial arbitration: the Age of Aspirations, the Age of Institutionalization, and the Age of Autonomy. It also asks whether we are entering a new age in the modern history of international commercial arbitration – an Age of Disruption, where the tension between the mercatocracy and the State is exacerbated by unfamiliar circumstances that could threaten the integrity of the arbitration system as a whole. These circumstances include such phenomena as the rise of nationalism, the reemergence of protectionism, and broader fears about globalization. It points to what Judge Crawford described as a “risk of erosion in the current political climate,” and asks whether this “erosion” could signal a shift from the Age of Autonomy to the Age of Disruption.