The designers at Apple apparently believe that text is ugly, so it should either be eliminated entirely or made as invisible as possible. … Today, Apple’s products violate all the fundamental rules of design for understanding and usability, many of which Tognazzini and I1 had helped develop. As a result, even a manual is not enough: all the arbitrary gestures that control tablets, phones, and computers have to be memorized. Everything has to be memorized.
It’s not just a problem for the elderly, either.
Both Norman and Tognazzini were formerly employees of Apple and are very much worth listening to.↩