Which groundbreaking invention initially failed commercially until its inventor rebranded it as a 'safety' product rather than a 'convenience' product, tapping into consumer fears?

Some of history's most revolutionary inventions succeeded not just because of their technical merits, but due to brilliant psychological marketing strategies that changed consumer behavior. This poll explores a famous case study of how consumer psychology transformed an invention from a laboratory curiosity into a household essential through clever positioning and marketing.

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The Microwave Oven
The Safety Razor (Gillette)
Post-it Notes (3M)
The Sony Walkman