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Xref: csiph.com comp.lang.python:67880

Marko Rauhamaa <marko@pacujo.net> writes:

> Grant Edwards <invalid@invalid.invalid>:
>
> > Wrong. If the two objects are not the same, then they will have
> > different ID values. If the ID values are the same, then you've only
> > got one object.
>
> Ok, that circularity again.

Yes, it's circular. In an abstract system like a programming language,
where the definition only needs to describe behaviour of that system,
what is your objection to circularity of definition?

A great many abstract systems designed by humans are defined in terms
that are ultimately circular. This does not in any way hinder them from
being useful definitions of useful systems.

-- 
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Ben Finney