🚀 go-pugleaf

In article <814@unc.unc.UUCP> rentsch@unc.UUCP (Tim Rentsch) writes:
> Now, Stream and Random have almost nothing in common (they happen to
> share the 'next' message, and their only common superclass is
> Object).  This example shows a useful case where we know essentially
> nothing about the object X (only that it responds to 'next' and
> returns a Float).

My mistake:  Random is in fact a subclass of Stream in the standard
Smalltalk system.  But, there is no reason it has to be -- Random
could just as easily have been a subclass of Object.  More to the
point, as an sender to an argument of class Random, I don't know
(obviously!) or care whether Random is related to Stream or not.  

cheers,

Tim