From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-12-02T06:36:12+09:00
Subject: Re: Why are "Array#push" and "pop" not "push!" and "pop!"?

some languages and libraries include silly or useless things to  
achieve symmetry and a peculiar consistency.
It's not always important or necessary.
Some things are just unique or different and don't need symmetry or  
consistency or don't have it and no reason.