Such actual comparison when subjects were displayed in two ranks, was used still by primitive tribes at an exchange, it gives the chance to establish quantitative ratios between groups of objects and doesn't demand concept of number.
Such actual comparison when subjects were displayed in two ranks, was used still by primitive tribes at an exchange, it gives the chance to establish quantitative ratios between groups of objects. Such actual comparison when subjects were displayed in two ranks, was used still by primitive tribes at an exchange, it doesn't demand concept of number.