We delude ourselves if we believe that skilled behavior is easy, that it can come about without effort. We forget the years of tuning, of learning and practice it takes to be skilled at even the most fundamental of human activities: eating, walking, talking, reading, and writing. It is tempting to want instant gratification – immediate expert performance and experiential pleasure – but the truth is that this primarily occurs only after considerable amounts of accretion and tuning.– Donald Norman

“When a device as simple as a door has to come with an instruction manual—even a one-word manual—then it is a failure, poorly designed.” – Donald Norman

But surely you must remember exclaiming at some time or other, “What a stupid way to build this thing! Now if they had only put this gadget here instead of there – or done this instead of that – it would have been so much easier to use.” The object of your complaint might have been almost anything – your stove, automobile , television set, or power mower. If you have ever been impelled into such an outburst, you have already been introduced to the field of human factors engineering” – Alphonse Chapanis (1965)

Human factors engineering, or human engineering, is concerned with ways of designing machines, operations, and work environments so that they match human capacities and limitations.”  – Alphonse Chapanis (1965)

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