Emre

“one is impressed by the fact that any country moving uphill has its unavoidable σ fraction of stupid people. However, the country moving uphill also has an unusually high fraction of intelligent people who manage to keep the σ fraction at bay and at the same time produce enough gains for themselves and the other members of the community to make progress a certainty. In a country that is moving downhill, the fraction of stupid people is still equal to σ; however, in the remaining population one notices among those in power an alarming proliferation of the bandits with overtones of stupidity (subarea BS of quadrant B in figure 3) and among those not in power an equally alarming growth in the number of helpless individuals (area H in the basic graph, figure 1). Such change in the composition of the non-stupid population inevitably strengthens the destructive power of the σ fraction and makes decline a certainty. And the country goes to Hell.”
― Carlo M. Cipolla, The Basic Laws of Human Stupidity