Chapter 4. Prioritizing Your Usability Problems
125 What Makes Problems Severe
• Hospital Usability: In Critical Condition
• Tip: The First Law of E-Commerce
• Five Biggest Causes of User Failure
134 Is It Enough to Focus on the Worst Problems?
Usability can be a matter of life and death. In war a soldier in a fighter plane has a critical edge if his plane’s user interface for targeting and firing systems is just one second faster than his enemy’s. On the Web, of course, usability does not have such a dramatic role. But it can determine whether your Web site fails or succeeds.
How do you know which usability problems have the most serious consequences for ...
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