"A recent research paper examining inequality in early Neolithic societies confirms what early-20th century anthropologists already knew, on the basis of comparative studies of farming societies: that the greater the surpluses a society produced, the greater the levels of inequality in that society. The new research maps the relative sizes of people’s homes in 63 Neolithic societies between 9000BC and 1500 AD. It finds a clear correlation between levels of material inequality – based on the size of household dwellings in each community – and the use of draught animals, which enabled people to put far greater energy into their fields."