something that is required for quantities is a mean of complex want
too_complex_thing is not first_order_collection. complex_measure is not measure. complex_numbers has as_factor complex_number is not scalar_value. measure_of_utility is not scalar_quantity. too_complex_thing is first_order_collection. complex_capability is not group_of_things. complex_numbers has not as_factor complex_measure is measure. ratio_of_primitive_quantities is ratio_quantity.