What Everyday Tech Marvels Blow Your Mind The Most?

Tech makes a lot of really crazy things possible. A lot of things people never thought we could actually do. We've sent people to space, and the ocean floor. We've got robots that clean up after you and glowing boxes that contain (kind of) virtually all world knowledge (kind of).There's no shortage of modern-day miracles. What ones blow your mind the most when you stop to think about them?

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