Part of the difficulty of exposing this narrowness is that there is a family split among neo-classical economists between those who believe that real-world market economies approximate perfect competition and those who don’t.
Parte de la dificultad para exponer esa concepción estrecha es la de que existe una división en la familia de economistas neoclásicos entre los que creen que las economías de mercado del mundo real se aproximan a la competencia perfecta y quienes no lo creen.