Entity Paul & Becky Oliver spoke thus:

> To those of us who definitely know our "right from our left," it may seem
> redundant, to ask for some photographic proof.
>
> However; working with many, even professionals,
I'll say! When I had my van painted they put the mirrors on the wrong sides.
After all, they bolt on and work fine, at least until you drive it. it took
some insistence to get them to notice that the rotation was all wrong, even
though the mirrors worked as expected.

http://www.newscientist.com/news/news.jsp?id=ns99994804
New Scientist

-- Gnarlie