As mentioned previously, the first idea is to be blind to sensitive attributes. Before investigating popular definitions of fairness, it could be nice to get back to some historical approaches. Inspired by Cleary (1968), Darlington (1971) suggested some formal definitions of what was called “cultural fairness”, based on properties on correlation. As we will see, most of those definitions have been translated into properties based on independence. Statisticians also have been investigating discrimination, and economists, with the Economics of Discrimination, by Gary Becker A …