Yet three centuries ago there was also technological progress, from the mechanical clock and the watermill to the cannon and the caravel, and on to strains of rice that can be cropped three times a year in Guangzhou and the breeding of merino sheep that can flourish in the hills of Spain.
Si hoy en día dividiéramos en partes iguales lo que producimos a nivel mundial, ¿obtendríamos un nivel de vida diez veces superior al de nuestros ancestros preindustriales? ¿Veinte veces?