One of my favorite books is
The Design of Everyday Things (originally entitled
The Psychology of Everyday Things), by
Don Norman, professor emeritus of computer science at UCSD and former Apple Fellow. The book is a seminal work on user-centered design: how design should intrinsically communicate function to users.
99% Invisible, a wonderful podcast about aspects of life that nearly all of us routinely overlook, recently ran a short story on what are known as
Norman Doors, yes, as in Don
Norman. Those are doors that lack
affordances (a term from the book: communicative design principles) to inform users as to how to use them without needing instructive signage (i.e.,
push and
pull). Why is that important? Well, if you haven't already gone to the
Norman Doors link, just previous, do so now. Then ask yourself whether you've ever tried to open a door only to find that you were pushing or pulling it in opposition to the way it actually opened?
P.S. Last year, the creator of
99%, Roman Mars (how about that for a name?), gave a Ted Talk on
vexillology: the study of flags and pennants, and what makes them good or bad. The City of San Francisco, whose flag was one of those negatively criticized in the talk, has since taken steps towards designing a better flag. Here is a follow-up to the Ted Talk, which includes a link to the Talk's video:
http://99percentinvisible.org/article/vexillology-revisited-fixing-worst-civic-flag-designs-america/.