Human logic [emphasis added] was forced on us by the physical world and is therefore consistent with it. Mathematics derives from logic. This is why … - Jef Raskin

One of the prophets of the personal computer industry, Alan Kay, has said that the true personal computer has not yet been made. I disagree. We have, as the ancient curse warns us, gotten what we asked for. We do indeed have computers being bought by individuals for themselves; they are "personal computers". The problem is that many of us didn't want computers in the first place -- computers are merely boxes for running programs -- we wanted the benefits that computer technology has to offer. What we wanted was to ease the workload in information related areas much as washing machines and vacuum cleaners ease the workload in maintaining cleanliness.

It would be wonderful if we could just tuck in a few loose ends and change a handful of details of present systems to have them work properly. Unfortunately, we have learned that the GUI concept has fundamental flaws that cannot be corrected by small changes. These flaws have to do with incompatibilities between the designs of both GUIs and command-line interfaces and the way our brains are wired. As we cannot change the way our minds work, we must change the interface design.

Jobs took over. He simply came in and said, "I'm taking over Macintosh hardware; you can have software and publications." … And then a few months later Jobs said, "I'm taking over software; you can have publications." So I said, "You can have publications too," and left. That was in May of 1982. He and Markkula said, "Please don't leave. Give us another month and we'll make you an offer you can't refuse." So I gave Apple a month; they made me an offer, and I refused.