According to Bar-Yosef and Belfer-Cohen, "It seems that certain preadaptive traits, developed already by the Kebaran and Geometric Kebaran populations within the Mediterranean park forest, played an important role in the emergence of the new socioeconomic system known as the Natufian culture."
Ifølge Bar-Yosef og Belfer-Cohen, "ser det ud til, at visse preadaptive træk, der er udviklet allerede af kebaranske og geometrisk kebaranske populationer i Middelhavets parkskove, spillede en vigtig rolle i fremkomsten af det nye socioøkonomiske system, kendt som den natufiske kultur."