Q. What challenge does ubiquitous computing present to the idea of human-computer interaction?

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Q. Which term is used to refer to any phenomenon with a persistent value in status–event analysis?

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Q. What is the strength of status–event analysis as an approach?

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Q. What does status–event analysis focus on when looking at different layers of the system?

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Q. What does Brian's watch represent in terms of status and events?

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Q. What kind of activity did Brian perform when he periodically checked his watch to determine the time?

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Q. What term is used to describe the time gap between an actual event and when it is perceived by an individual?

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Q. Which property refers to the different timescales at which events and statuses operate?

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Q. What must applications consider when using presentation techniques to cause events for users?

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Q. Why is it important to match the presented form of an event to the timescale of the event?

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Q. What issue could arise from using flashing lights and alarm bells for non-critical events?

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Q. What is the key to causing a perceived event for the user at the appropriate timescale?

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Q. What is the purpose of employing naïve psychology in interface design?

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Q. Which user action guarantees their attention on a specific target while using a computer?

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Q. What is a characteristic of audible events in interface design?

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Q. What does the concept of "closure" in the contect of interface design?

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Q. What is the benefit of using a screen flash as a silent bell in interface design?

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Q. What is the significance of the term "perceived event" in the context of computer agents?

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Q. What concept challenges simplistic models of pre-planned human action?

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Q. What does the distributed cognition literature suggest about cognition?

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