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Useability Engineering (Executive Summary (slogans (Your best guess is not…

- - - - Software must be suitable for the task
      - Software must be easy to use
      - The principles of software ergonomics must be applied
  - - - Impossible to design an optimal user interface hust by giving your best try
      - Users have infinite potentials for making unexpected misinterpretations
      - One need to acknowledge the need to modify initial design
      - Use Julian Caesar's as example
    - - The designers attibude should be that if users have problems, then it is not because they are stupid
      - Use example from own experience
    - - Users often do not know what is good for them
      - Example: study of weight of the telephone handsets conducted in 1950s (people where used to heavy handsets)
      - Use examples from own expereince
    - - First, customization is easy only if it builds on a coherent design
      - Second, customization requires additional user interface and add complexity
      - Third, heavy customization makes user interface different for different users => difficault to get help from colleges
      - Fourth, users may not always make the most appropriate design decisions