Contradictive goals can be detected early. For example, our principal would
like to offer a highly comfortable usage with the system but, on the other hand,
he wants the system to be secured against misuse. High security usually reduces
the usage comfort, since the user will generally have to do additional steps.
We prepare the goals and ideas for the system in a workshop. We invite our
principal and two of his staff. From our own team, the project manager and an
analyst will participate.
Table 2.1 (Continued)
The returning of a car follows the procedure in reverse order.
In addition, Mr. Speedy presents a navigation system that the competitor system
cannot offer. However, he ??™ s afraid that there might be a cost problem. Therefore, he
fi rst wants to have a feasibility study on this.
Mr. Speedy gave us a couple pictures of the competitor system (Figure 2.3).
FIGURE 2-3
Competitor system: card reader and on-board computer.
29
Now, it won ??™ t make much sense to think of common sentences about the goals
next to the fl ipchart and to discuss commas and other textual nuances.
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