"The nature of the personal computer is simply not fully understood by companies like Apple (or anyone else for that matter). Apple makes the arrogant assumption of thinking that it knows what you want and need. It, unfortunately, leaves the “why” out of the equation — as in “why would I want this?” The Macintosh uses an experimental pointing device called a “mouse.” There is no evidence that people want to use these things. I don’t want one of these new fangled devices."
Borrowed from http://37signals.com/svn/