Cellphones, self-driving cars, and laptops may grab all the attention, but zippers, paper, and, even the pavement covering our roads are all technology, too. Today we want to know your pick for the most amazing, but completely underrated, technological innovation.

Tell us what the tech was, what makes it so phenomenal, and how exactly its appearance changed the world. Whether you want to go far, far back into the past or just to focus the spotlight on one of the modern (but mostly invisible) innovations of our own time, give us your thoughts in the comments.

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