Oded Galor, an economist from Brown University, locates his investigation into inequality in precisely the terrain where Piketty daren’t look. At the centre of his argument is the idea of the Malthusian Trap, a problem encountered by agricultural civilisations from ancient times up to the industrial revolution.
A village that successfully cultivates crops will at first experience a surplus of food. This will allow its inhabitants to sustain more children and the population will increase. But that puts a greater strain on the food supply and the standard of living falls. In this cruel cycle, progress leads to failure. An extreme example is the culture of Easter Island, which flourished, consumed all the island’s resources, and collapsed.
Societies remained stuck in this cycle for thousands of years. But then something happened, a change, ‘triggering the phase transition in which the human species escaped from this poverty trap’, Galor writes. Suddenly ‘the Malthusian equilibrium quite mysteriously vanished and tremendous growth ensued’. The countries that escaped surged ahead. Those that did not were trapped in poverty. This, he argues, is at the root of the global inequality that we see around us now.
The escape was triggered by the industrial revolution, with its combination of population growth and new technology. Larger populations are, Galor writes, ‘more likely to generate both a greater demand for new goods, tools and practices, as well as exceptional individuals capable of inventing them’. This coincides with an emphasis on the value of education, which in turn drives more invention in a self-reinforcing cycle of improvement and growth.
The Journey of Humanity really comes alive when Galor digs into the deepest roots of inequality, explaining that ancient societies with agriculture based on grain developed faster than those based on tubers such as cassava, sweet potatoes and yams. ‘Grains could be more easily measured, transported, stored and therefore taxed,’ he writes, which led to societies that were complex and hierarchical. ‘Thus, the suitability of soil for either grains or tubers meaningfully influenced the formation of states.’
Even within grain-producing civilisations, the type of grain cultivated had deep implications for a society’s character and long-term prospects. The cultivation of rice, for example, ‘requires large-scale and therefore shared irrigation systems’. This has tended to form a more ‘collectivist, interdependent culture’. However, ‘land that is suitable for the cultivation of wheat, which requires a lower degree of cooperation, has contributed to the emergence of more individualistic cultures’.
According to Galor, global inequality is not simply a political or economic construct. It emerges from factors including geography, the volatility of weather systems, the incidence of disease and the presence of cultivable plant species at particular latitudes.
https://www.spectator.co.uk/article/the-trouble-with-thomas-piketty