Do you know everything about the objects surrounding you? When something is built or created for the first time, there is typically a logical explanation for every part of the object in question. But with time we tend to forget the initial purpose and some of the important features of the object.

Here're 70+ secrets about things you see every day. From metal button on jeans to a hole in the handle of pots - you'll get to know the original purpose of these details. By the way, do you know how to tell if the boiled egg was fresh? Twist it! I'll tell you more about it at the end of the video.

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