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The Ingenious Design of the Aluminum Beverage Can - engineerguy
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I've always long believed that this is the single most interesting video on YouTube. It's so well written and well explained, and every time it pops up, I watch it in its entirety. Such a fantastic channel.
I’ve watched it so many times. When I tell people about my favorite YouTube video they laugh at me, but then I watch it with them and they’re like “aight yeah that was pretty good.”