On Thu, Apr 24, 2003 at 05:43:08PM +0900, Hal E. Fulton wrote:
> Apparently the loop in Matz's original drawing shows that
> the circularity is not entirely in my head... but can I
> omit the singleton classes and still depict that loop?

You need two kinds of relations so the directed graph becomes a semantic
network:
 * inherits (aka superclass (though reversed), derived from, etc)
 * is a (aka class)

So you still get the loop but with the arrow from Object to Class being
of a different colour.

We have the "representation problem" because classes are objects, so you
have to find some way to distinguish between the properties of classes
and their instances.

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