[Haskell-cafe] Ranges over Rational.

Hello, i stumbled upon the specification of the Enum instances of Floats, Doubles and Rationals. I understand the idea behind this specification for floating point numbers. But why was it also used for Rational? As Rationals are exact, it would make sense to use the same definition of ranges as used for Integers. The specification seems to nullify the difference between Rational and floating point types in this respect. I would consider this a, well, a mistake in the specification. Kind regards, André Scholz