To specify a given value V G we must choose (a) a system, (b) a scale from the system, and (c) a point from the scale-the points on a scale S N being represented by integers from 0 to N. This formalization of the given value has the advantage of distinguishing not only degrees of roundness, but also different mathematical forms, which can be equated with scale systems.
the system including [S 10 , S 100 , S 1000 ] corresponds to the mathematical form percentages, whereas simple fractions use instead a system with very low values of N, including [S 2 , S 3 , S 4 ].