“If we [Microsoft] had actually met and interacted at length with real people at any point over the past 15 years, we probably would have realized already that designing a “program” that consists of 3,829 files, spread over 60 folders, is not how people expect it to work. That, by the way, is not a random figure. It is the number of files and folders in C:\Program Files\Microsoft Office on my laptop.”
http://msinfluentials.com/blogs/jesper/archive/2009/07/20/warning-the-software-you-are-installing-does-not-match-your-mental-model.aspx