Labels:text | clothing | man | screenshot OCR: 1The Design Challenge THE BOOKSHELF Map that one key is preferable to any other. Anyway, . Make things invisible. Widen the Page isn't it true that one wrong keystroke can blow Gulf of Execution; give no hints to the up the machine? Or destroy valuable data? Or operations expected. Establish a Gulf accidentally get connected to some top-secret of Evaluation: give no feedback, no Find data bank and then be investigated by the Secret visible results of the actions just taken. Service? Who knows what danger lurks in the Exploit the tyranny of the blank screen. Mark keypress? It is almost as frightening as being taken to a party filled with strange people, being . Be arbitrary. Computers make this led to the center of the room and let go. Your easy. Use nonobvious command names Back host disap ...
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