Which groundbreaking product innovation was initially rejected by its inventor's own company because executives believed "there is no market for it"?

Throughout history, certain product innovations have completely transformed how we live and work. Some innovations were the result of meticulous planning, while others came about through happy accidents or unexpected discoveries. This trivia question focuses on a pivotal moment in product development history that changed an entire industry and our daily lives. Test your knowledge about the journey from concept to groundbreaking product!

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• The Post-it Note (developed at 3M by Spencer Silver and Arthur Fry)
• The Sony Walkman (developed by Nobutoshi Kihara for Sony's co-chairman)
• The iPhone's multi-touch screen (developed at Apple by Wayne Westerman)
• The microwave oven (developed at Raytheon after Percy Spencer's candy bar melted)

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