Reading Bogdana’s blog (http://bogdanatheplanner.blogspot.com), I saw she recommended a book that I also liked a lot:
I think that, just as Miller’s book, it is this kind of book that just make your day. In the sense that, reading them, you say to yourself: Hmmm, I saw these things [that they describe], but I didn’t think at this perspective! Besides that, they are authors that, in their domain, they really made a point. And, if you are interested in theories that explain the unexplainable, as I think to be the everyday life, well, again, this is the right book for that. Why do I say this? Don’t you think that things that are the most common and familiar to us, those are the most difficult to explain?
So, here is an author from material culture studies, a guy who, again, influenced my way of seeing things. After reading this book, you will pay more attention to objects around you, you’ll start to think that maybe they are more important in your life than you thought. If Time magazine said that this book is provocative, well, than you might trust their opinion better than mine. :-p
So, Norman starts by asking himself (and us) why all these items around us are supposed to make our life better when, in order to use them, we need all sorts of manuals, guides, or key operators? Therefore, Norman starts questioning our use of everyday things and the increasing difficulty of their use. “This book is intended to make you aware of the problems of design and interested in improving things. Many readers have told me that it has changed their lives, making them more sensitive to the problems of life and to the needs of people”, he says (Normal, 1998:v).
He raises the problem of the supposed intelligent objects, objects that are built in order to replace more and more human actions, but they are so intelligent, that they come with big use manuals that actually nobody reads. As a psychologist, Norman explains that his interest started from his incapacity at working the everyday things and if this incapacity is really a technique incompetency or is there something else. How come people today use less and less functions and features of an intelligent object? This is indeed an important question.
Norman calls this a psychopathology of today’s objects and everyday things. Because they get so complicated that people have to put up, as Norman says, with all sorts of frustrations, frustrations that come from the way that human mind works. For instance, “the human mind is exquisitely tailored to make sense of the world.” (Norman, 1998: 2). Everything that escapes from this sense, becomes frustrating and absurd.
Norman thinks that the source of this psychopathology is the bad design. And he gives the example of Carelman’s Coffeepot for Masochists, in Jacques Carelman’s book, Catalogue d’objets introuvables (translated at Humanitas, Catalogul obiectelor de negasit). 
A bad design breaks some basic rules: visibility, mapping, relating (a failure to relate the new functions to the similarly named functions that people already know about), appropriate clues, feedback at one’s actions. “These principles constitute a form of psychology – the psychology of how people interact with things” (Norman, 1998:9).
Just think about how you KNOW to use an object just by looking at it; balls are for throwing or bouncing. Simple things should not require explanation. “When simple things need pictures, labels or instructions, the design has failed”. Put yourself some questions about the everyday use of everyday things and think about these aspects of your use of objects. This could be a passionate exercise for better knowing yourself and also the world you live in.