Which famous commercial campaign was considered one of the biggest marketing failures in history, yet revolutionized the importance of consumer testing and insights?

In the world of marketing, sometimes the biggest failures lead to the most profound industry shifts. This poll tests your knowledge about a legendary commercial disaster that paradoxically transformed how companies approach advertising strategy and consumer research. This famous marketing mishap from the 1980s represents one of the most studied cases in business schools worldwide, illustrating the dangers of changing established products without proper consumer insights.

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New Coke's 1985 launch campaign
Apple's 1998 'Think Different' campaign
Pepsi's 1996 'Blue' product launch campaign
McDonald's 1997 'Arch Deluxe' adult-focused campaign