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The level of potential physical productivity of a society depends on both the development of the intellect of its members, and a minimal standard of both demographic characteristics and of consumption. - Robert Trout The level of potential physical productivity of a society depends on both the development of the intellect of its members, and a minimal standard of both demographic characteristics and of consumption. - Robert Trout The level of potential physical productivity of a society depends on both the development of the intellect of its members, and a minimal standard of both demographic characteristics and of consumption. - Robert Trout