Chapter 4. Objective Chain
Suppose I am in the market to buy a new car and my main objective is to spend the least amount on a car that meets my basic needs. I care about gas mileage, long-term repair costs, frequency of repairs, cargo space, and safety. To decide which of these are most important to me, I think about how much each one contributes to the overall value of the car.
I can get great gas mileage with a hybrid vehicle, but that feature will cost me $10,000 and save me only $700 a year based on the miles I drive. Given the likely life of the vehicle, the feature does not have enough value to justify buying a hybrid car. Yet if I drive more miles each year or if I assume that gas prices will triple, then it could be worthwhile.
Research ...
Get Visual Models for Software Requirements now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
