Which famous product design innovation was initially rejected by its company's founder, who told the designer, 'I don't want any circular wheels on my machines'?

Throughout history, product design has played a crucial role in technological advancement and market success. Some designs were so revolutionary that they not only defined their creators but also reshaped entire industries. This trivia question explores a significant moment in product design history that changed how we interact with everyday technology. Test your knowledge about famous product design innovations that transformed our world!

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Apple's click wheel on the iPod
Dyson's bladeless fan design
Logitech's trackball mouse
Sony's rotary control on the Walkman