It is because the distribution of that magnificent progress is so unevenly distributed. The size of the inequality gap inversely correlates with the amount of f

It is because the distribution of that magnificent progress is so unevenly distributed. The size of the inequality gap inversely correlates with the amount of freedom and social mobility available, even if the system has risen on average. We should be looking at median progress or other robust indicators rather than simple averages (which are greatly affected by the presence of outliers and long-tailed distributions)