The estimates are extrapolations from the equations that best describe the relationships between the variables. In Sum . Schooling is the single most important correlate of national wealth. The larger the percentage of children in school, the greater the national wealth. The second most important correlate of national wealth is income equality.
Equality is probably also a cause and effect of national wealth.
It is a novel about what a society of complete equality would be like. With the year 2000 approaching, it makes fascinating reading. In Relation to the Classics . The evidence of 160 countries in 1986 shows that Thomas Hobbes was most wrong. An all poweful monarch is not the best form of government.