The book is a really well written in-depth look at the way we see a computer. The author takes the case of the Personal Computer and the history behind OSeses like BEoS or PCDOS and finally MS Dos. and Windows. It can be considered obsolete and out of date if you do not really pay attention to what a computer is and what it is not. It is actually universal if you take a step back and see down the line on how things can be from today or could have been. The chapter about the GUI was a good analysis about what our PCs might have been today if people were more thorough about making a decision based on something else than just mere looks. Overall this book is easy to read and while it gets theoretically detailed about notions that most of computer users have forgotten or never known, it is really interesting and never a bore.