Yes. There's an implicit requirement on the classes we're discussing to be subclassable in the first place, otherwise the discussion is pointless. We may as be talking about the number of vertices in polygons and allowing polygons to include circles. 

s/\bclass\b/class (which must be subclassable to start with)/g

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In reply to Re^5: OO in Perl 5: still inadequate by fergal
in thread OO in Perl 5: still inadequate by Aristotle

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