The users mental model is the users own understanding of what they are actually doing when they perform a certain action on an object. It is not always wrong and it is not always right, but it helps the user understand what exactly they are doing.
In relation to project 4, that users mental model could be completely changed if the object they are acting on, responds with information concerning their current action, which would allow the user to always know exactly what they are doing.
How might this mental model contrast with the implementation model of the programmers?
The users mental model would contrast with the programmers because the programmer knows exactly what is happening. The user uses this mental model to help them, in their words, understand the process of what they are doing. The programmers mental model is the process, it is exactly what is happening.
The users mental model would contrast with the programmers because the programmer knows exactly what is happening. The user uses this mental model to help them, in their words, understand the process of what they are doing. The programmers mental model is the process, it is exactly what is happening.
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