Q. Why is the basic undo requirement inconsistent for systems with more than two states?

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Q. What is the main drawback of the basic undo requirement?

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Q. What aspect of interaction do models focused on "Timing" primarily address?

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Q. Which of the following is a distinguishing feature of the "Windowed systems" model?

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Q. What do models addressing "Attention" aim to describe?

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Q. What does the term "non-determinism" refer to in the context of interaction models?

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Q. What do "Dynamic pointers" models primarily focus on?

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Q. Why are there few models of continuous real-time interaction in the HCI literature?

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Q. Which of the following is NOT an example of continuous behavior?

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Q. What os meant by "event-in/status-out" in the context of the PIE model?

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Q. What is the main purpose of interstitial behavior in status–event analysis?

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Q. What distinguishes status–event analysis from discrete models of interaction?

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Q. What is the purpose of status-change events in status–event analysis?

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Q. What is the role of status phenomena in status–event analysis?

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Q. In engineering and physics, how are continuous and discrete phenomena typically regarded?

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Q. What is the main difference between the systems theory model and the status–event analysis (S–E) model?

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Q. How are event phenomena typically treated in systems theory and applied mathematics?

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Q. What is the impact of treating everything as continuous in modeling behavior?

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Q. Why might one be forced to invent events when applying systems theory to a real example?

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Q. In which contexts might the merging of event-based and continuous status behavior be a concern?

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