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16 Everyday Things And Their Uses You Had No Clue About

13. The small tab that opens the can of soda serves a dual purpose acting as a straw holder. Refer to the picture shown and you can enjoy your drink next time without having the straw swiveling all around.
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14. Have you ever noticed a very tiny hole in airplane windows? Ever been curious as to why they are there? For such a little thing, it serves a life-saving purpose. These tiny holes maintain a steady air-flow and help regulate and stabilize the air-pressure inside the airplane.
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15. The dent at the bottom of wine bottles are to commemorate and signify a historic era when wine bottles were made using a pontil and blow pipe. The wine bottles back then were free blown and had a similar punt at the bottom.
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