Now that you know why allstar shoes have two holes on the side and why sneakers have an extra hole on top, it's time to look at the functions of many other everyday things that we come across every day but don't know their purpose.
Now that we've debunked the myth of the two holes in Allstar girls, it's time to debunk the meaning of some other things we encounter every day but don't know their meaning. You know why shirts have a loop on the back? Do you know what the cylinder on the laptop charging cable is for? Find out all this and more below.
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Holes in an airplane window
You've probably noticed a small hole in the window during an airplane flight? The window consists of three layers. The layer closest to the passenger protects the middle layer, and the ventilation hole is located between the outer and middle layers. The task of the outer two layers of the window is to regulate the difference between the two pressures. As the plane climbs, the pressure drops, but outside the pressure drops faster than inside the cabin, where the pressure level suitable for the passengers is maintained. This means that the pressure inside the plane is higher than outside. The ventilation hole therefore has a safety function, as it regulates the difference between the pressure outside and inside the aircraft.
The blue part of the eraser
If you thought that the red part of the eraser was for erasing a regular pencil, and the blue part was for removing ink, you have been wrong all your life. The difference between the blue and red part is only that the blue is used to erase content on thicker types of paper that have a rougher texture (drawing sheets, cardboard, cardboard...).
Loop on the back of the shirt
You've probably noticed that a lot of shirts have a loop on the back? There are several explanations. One is that it is a decorative element. The second is that the shirt fits better. The third is that when a man falls in love, he removes the noose to show that he is devoted, and the noose ends on the shawl of the chosen one.
The hole in the pasta spoon
You can read what the hole in the pasta spoon is for in this post: What is the hole in the pasta spoon for?
A small pocket inside the jeans pocket
Do you know what the little pocket on the right side of the jeans is for? No, it's not for the iPod, as Steve Jobs joked. It was introduced by Levi Strauss and patented way back in 1872 during the Gold Rush. It was intended for pocket watches, which were more protected against shocks and theft there than on vests. Jeans were primarily workers' and not fashion clothing.
Fabric samples when buying new clothes
The fabric samples that we sometimes get with new clothes are not intended for mending. In reality, these pieces are guinea pigs for different ways of washing clothes so as not to ruin the garment.
Hole in BIC ballpoint pen cap
The famous ballpoint pen has an opening on the end of the blue cap, which has puzzled many generations. The answer will surprise you. It is a safety measure against suffocation. Namely, we like to pull caps around our mouths, and if someone accidentally swallows them and it goes into the trachea, the hole lets in enough air for the person to survive and not suffocate.
Holes on the side of the All Star Converse sneaker
You can read more about the meaning of holes here: Why do Converse All Star sneakers have two holes on the side?
Extra hole at the top of the sneaker
We solved the mystery of the extra hole here: The mystery of the extra hole or how to properly tie a sports shoe
Cylinder on laptop cable
The cylinder isolates the laptop from electromagnetic interference and noise generated by waves or against noise in the AC and DC converter. In the vernacular, the current releases high frequencies. It is also called a ferrite choke.
