Sharon ,
Those are all great examples. It is always surprising to me, when I look around me, to find so many things that are designed "universally" without our thinking about it -- and possibly without the designer having that conscious thought. For example, the icons used in MOST computer operating systems are universal -- the little envelope to denote email, the speaker with sound radiating from it, the hand-held magnifying glass that represents "search." It is not so much that "one size fits all" as that these similarities make it easier for us to move seamlessly through a modern world.
Dr. Jane Jarrow