Gini coefficient, which measures the difference between a society’s division of income and a perfectly equal division of income. It’s really quite elegant. If 100 percent of a given population were to earn $1 per day, that would be absolute equality. If 100 percent earned $1 million per year, that too would be absolute equality. But when only 1 percent earn $1 million while everyone else earns nothing, we’re approaching absolute inequality.
