Comment by throwaway487548

Uniformity, which is a really good thing. Surely you could say (class-of 3) or (class-of nil) or (class-of '(1 2 3)) but technically these values are not objects, like it is in, say, Scala, which is a real-world example of how good it is to have a uniform language (everything is an expression, every value is an instance of a class, and therefore everything is uniformly high-order, uniformly typed (unlike Java with distinctions of so-called primitive types) etc, etc.