No es una broma. Acaba de aparecer como artículo en prensa en la web del Journal of Economic Organization and Behavior. Economistas estadounidenses y holandeses han desarrollado un modelo comportamental que muestra como la división del trabajo en Homo sapiens y el inicio de actividades comerciales que vino asociado generó un incremento en la eficiencia (permitiéndoles superar sus "deficiencias" biológicas) y una ventaja competitiva con respecto a especies mejor adaptadas biológicamente (como los Neanderthales), que acabaron extinguiéndose por esta razón.
Los resultados sugieren que la selección natural tuvo una fuerza muy débil ya desde fases muy iniciales de la evolución humana con respecto a procesos de selección cultural.
Newswise proporciona el siguiente resumen de los resultados del estudio:
Newswise — Economics-free trade may have contributed to the extinction of Neanderthals 30,000-40,000 years ago, according to a paper published in the “Journal of Economic Organization and Behavior.”
“After at least 200,000 years of eking out an existence in glacial Eurasia, the Neanderthal suddenly went extinct,” writes University of Wyoming economist Jason Shogren, along with colleagues Richard Horan of Michigan State University and Erwin Bulte from Tilburg University in the Netherlands. “Early modern humans arriving on the scene shortly before are suspected to have been the perpetrator, but exactly how they caused Neanderthal extinction is unknown.”
Creating a new kind of caveman economics in their published paper, they argue early modern humans were first to exploit the competitive edge gained from specialization and free trade. With more reliance on free trade, humans increased their activities in culture and technology, while simultaneously out-competing Neanderthals on their joint hunting grounds, the economists say.
Archaeological evidence exists to suggest traveling bands of early humans interacted with each other and that inter-group trading emerged, says Shogren. Early humans, the Aurignations and the Gravettians, imported many raw materials over long ranges and their innovations were widely dispersed. Such exchanges of goods and ideas helped early humans to develop “supergroup social mechanisms.” The long-range interchange among different groups kept both cultures going and generated new cultural explosions, Shogren says.
Anthropologists have noted how judicious redistribution of excess resources provides a distinct advantage to “efficient hunters” as measured by factors such as increased survivorship, social prestige, or reproductive opportunities, the researchers say.
“One of the striking features of the archaeological record is that Neanderthal technology was nearly stationary for many thousands of years whereas technology of early humans experienced many innovations,” Shogren says.
He says the evidence does not support the concept of division of labor and trade among Neanderthals. While Neanderthals probably cooperated with one another to some extent, the evidence does not support the view that specialization arose from any formal division of labor or that inter- or intra-group trade existed, he says. These practices seem to require all the things that Neanderthals lacked: a more complicated social organization, a degree of innovative behavior, forward planning and the exchange of information, ideas and raw materials.
“Basic economic forces of scarcity and relative costs and benefits have played integral roles in shaping societies throughout recorded human history,” Shogren says. “No reason exists today to discount either the presence or potential impact of economics in the pre-historic dawning of humanity.”
Referencia:
Horan RD, E Bulte & JF Shogren. How trade saved humanity from biological exclusion: an economic theory of Neanderthal extinction. Journal of Economic Behavior & Organization, In press, Corrected Proof. Available online 26 February 2005. Abstract.
