Which mathematical concept was famously incorporated into the design of Apple's iPod click wheel, contributing to its revolutionary user experience?

The field of mathematics has profoundly influenced product design across industries. From the golden ratio in aesthetic layouts to complex algorithms powering recommendation systems, mathematical principles help create products that are both functional and appealing. This poll tests your knowledge of how mathematics has shaped iconic product designs that changed their respective industries.

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Fibonacci sequence for intuitive scrolling acceleration
Pascal's triangle for button sensitivity mapping
Mandelbrot fractal patterns for touch recognition
Pythagorean theorem for circular interface proportions