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From: "Chad R. Meiners" <crmeiners@hotmail.com>
Newsgroups: comp.lang.ada
Subject: Re: MI in Ada 200X (was: Suggestion for Ada 200x - Interface
 inheritance)
Date: Sat, 31 May 2003 15:58:13 -0400
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"M�rio Amado Alves" <maa@liacc.up.pt> wrote in message
news:4a4de33a.0305290406.567b7451@posting.google.com...
> The pros include "naturalness" of expression, occuring both at
> creation
>
>   type Child is new Mother, Father;

This expression is very unnatural since outside hermaphroditic species a
child is by definition not substitutable for either a mother or father ;)