1. What is the reason for the use of a task completion time?
The reason is that task completion time only accounts for the efficiency of the task design, whereas other factors, such as learnability, and cognitive workload may need to be taken into account.
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2. Why is it imperative that the authors create a new method that allows the evaluation of RBIs?
Because of problems such as the ones already mentioned, it is imperative that the authors create a new method that allows the evaluation of RBIs.
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3. What is the widely known evaluation method in HCI?
The usability evaluation process is many times coupled to GOMS, because GOMS is one of the most widely known evaluation methods in HCI.
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4. What are the advantages of KBUE over existing methods?
The authors also discussed the advantages of this method over existing methods that were not designed to handle postWIMP interfaces, and the authors have shown how the scenarios may become formalized, through a framework such as Codein, to allow predictive evaluation as well.
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