Exercise $1$: You have just completed a small evaluation project for a tourist information 'walk$-$up$-$and use' kiosk designed for an airport arrivals area. A heuristic evaluation by you $($you were not involved with the design itself$)$ and a technical author found $17$ potential problems, of which seven were graded severe enough to require some redesign and the rest were fairly trivial. You then carried out some participant evaluation. You had very little time for this, testing with only three people. The test focused on the more severe problems found in the heuristica evaluation and the most important functionality $($as identified in the requirements analysis$).$ Your participants $-$ again becatse of lack of time and budget $-$ were recruited from anothera section of your own organization which is not directly involved in interactive systems designa or build but the staff do use desktop PCs as part of their normal work. The testing took place in a quiet corner of the development office. Participants in the user evaluation all found difficulty with three of the problematic designa features flagged up by the heuristic evaluation. These problems were essentially concerned with knowing what information might be found in different sections of the application. Of the remaining four severe problems from heuristic evaluation, one person had difficulty with all of them, but the other two people did not. Two out of the three test users failed to complete a long transaction where they tried to find and book hotel rooms for a party of travelers staying for different periods of time. What, if anything, can you conclude from the evaluation? What are the limitations of the data? Exercise $2$