Q. What is the importance of design notations in narrowing the formality gap for validation?

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Q. In the context of software development, why are managerial issues of design important?

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Q. What is the distinction between the technical perspective and the managerial perspective of the software life cycle?

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Q. What does signing off on a requirements specification indicate?

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Q. Why is it worth the effort to understand and improve the interactive system design process?

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Q. Why is it challenging to determine all the requirements for an interactive system from the start?

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Q. How does the formality gap impact the validation of interactive systems?

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Q. How does the life cycle of interactive systems differ from traditional software life cycles?

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Q. What role do experts play in the validation of interactive systems?

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Q. What is a key challenge in managing the development of interactive systems?

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Q. What is the primary challenge in predicting human behavior for designing interactive systems?

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Q. Why are some models of human users not useful at early and abstract stages of design?

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Q. What is the importance of conducting experiments for testing usability properties of designs?

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Q. What is the significance of making experimental systems resemble the final product?

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Q. What is the challenge in the principled approach to interactive system design?

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Q. What is the "chicken-and-egg puzzle" in interactive system design?

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Q. Which approach to interactive system design relies on early understanding of user tasks?

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Q. What was the main limitation of traditional software life cycles for interactive system design?

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Q. What is one limitation of the traditional software life cycle in supporting user tasks?

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Q. Which category of design approaches aims to better suit the design of interactive systems?

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