Coming in late here, but it seems odd to have an actual class called
"MetaClass".  The meta-object protocols with which I am familiar have the
concept of a metaclass (a class whose instances are themselves classes), and
the class Class is such a metaclass, but where does a class named MetaClass
fit in?  If all metaclasses are instances of MetaClass, then MetaClass must
be an instance of itself - is this then the only cycle in the graph?

> 1) MetaClass is a subclass of Object
> 2) MetaClass is an instance of MetaClass

> So the following code should be true (given a random instance $obj).
>    $obj.meta.isa(MetaClass);
>    $obj.meta.isa(Object);

What does $obj.meta return - is it just a shortcut for $obj.class.class, or
is something else going on here?

If the former, then all of these should be true.


> However, Syn/Apoc 12 shows that the following is true if $foo is an
> instance of the Foo class.
>    $foo.meta.isa(Foo)

Hm.  That doesn't make sense to me at all.  Clearly I need to reread the
Syn/Apoc.  I'd expect $foo.isa(Foo) and that's it, although if nothing fancy
with composition is going on $foo.class == Foo would also be true.

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