One can observe a tendency to an increase in the middle class whatever the criterion of membership adopted. With a broad definition of the middle class, the vulnerable group tends to lose importance and the heterogeneity of this group increases. On the contrary, the choice of a narrow definition...

The apparent stability of relative shares (profit and wages) in income during the 2000s, or even the increase in the wage share in Latin American countries, seems to be a ?surprise? in Kaldor?s opinion, a ?mystery? for Schumpeter, or even ?a reproach to economic theory? according to Robinson....