Q. What is the purpose of physically separating the presentation of different logical threads of user-computer conversation using windows?

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Q. How are metaphors used to teach new concepts in terms of ones already understood?

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Q. What was the metaphor used in the Xerox Alto and Star workstations to link tasks associated with file manipulation?

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Q. What is one drawback of relying solely on a metaphor for a computer application?

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Q. What problem can arise when designers try too hard to make a metaphor stick in a computing system?

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Q. What does a metaphor in a virtual reality system involve?

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Q. Why can metaphors be problematic in the context of growing internationalization of software?

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Q. Which personal computer introduced the concept of direct manipulation and the desktop metaphor for file management?

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Q. How does the direct manipulation interface represent files and directories in the desktop metaphor?

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Q. What is one advantage of using direct manipulation for file management compared to a command line interface?

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Q. Why is it impossible to formulate a syntactically incorrect move operation in the pick-up-and-drag style of command in the direct manipulation interface?

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Q. How does the direct manipulation interface provide continual visual feedback during drag-and-drop actions?

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Q. According to Norman and Draper, what does the model-world metaphor in direct manipulation systems create for the user?

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Q. In a direct manipulation system, how are input and output expressions related?

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Q. What does WYSIWYG stand for in the context of interfaces?

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Q. What is the implication of a WYSIWYG interface in terms of the mapping between representation and final product?

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Q. What is a limitation of the WYSIWYG paradigm for usability in certain cases?

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Q. What is direct engagement in the context of direct manipulation systems?

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Q. What is the main difference between the direct manipulation paradigm and the language paradigm?

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Q. What is one interpretation of the language paradigm that requires the user to understand the underlying system's structure?

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