Delivering Two Kinds of Quality [the broken link was removed] by Keith McFarland, Business Week:
What do the Japanese take for granted when it comes to quality? They take for granted that things should work as they are supposed to, and they even see an elegance to things working properly — whether it’s cars, subway schedules, traditional flower arranging, or the famous tea ceremony.
Japanese manufacturers were so obsessed with taken-for-granted quality that they created a constant stream of innovations that built on renowned quality-management consultant Ed Deming’s original concepts: lean manufacturing, just-in-time industry, and design for quality. In today’s competitive markets, manufacturers need to be very far along this quality innovation curve — or moving along it very quickly.
Kano model of Customer Satisfaction: Kano saw three types of customer satisfaction: required (basic quality also threshold requirements), more is better (performance quality) and delighter (excitement quality).
Customers expectations change over time. Often what was once enough to delight a customer (remote control for a TV) becomes expected. Once a feature is expected the organization gets no credit for providing it they only risk a negative reaction if they fail to provide it.