Educazione e futuro demografico

The demographic evolution of human populations is generally represented as a succession of S-shaped curves, related to the gradual escape from limiting factors (such as space, competition, disease, food…). The removal of each limiting factor altered the previous equilibrium, permitting the survival of higher number of humans.Other factors remaining relatively stable, equilibrium tended to occur when an average of 2.1 children per couple reached the next generation, and this was obtained in most populations by balancing neonatal and infant deaths against repeated pregnancies (a dozen or so per woman in many populations). But the removal of so many causes of death through health care has brought many more children per couple to reproductive age, resulting in population explosions unless birth control is enacted.The cultured and affluent nations have tried to export birth control by often ineffective or objectionable methods (remember a small radio set for a vasectomy in India?).But only methods compatible w...