Of course, these constraints were at work over previous centuries, before Malthus and Ricardo articulated them, but homo sapiens was able to “cheat” by expanding our resource base (colonialism) to bring in cheaper resources and food; by finding substitutes for scarce resources; and by improving our technology so that the same amounts of land and resources could be used more efficiently.
Puisque la planète est désormais bien remplie, il s’avère difficile d’élargir les réserves physiques en ressources.