Why is it made like that? 10 hidden functions of common objects

We are not always aware of the real reasons why certain objects - which we may use or see on a daily basis - are made in a certain way. We often ignore their true functions and do not exploit their full potential. Sometimes there are historical reasons, linked to factors that no longer count today, that drove certain designs.

In any case, taking a good look at what surrounds us and shapes our daily life can be beneficial. Not to mention that it satisfies that an innate curiosity that we all have. Below, is a list of the hidden functions of certain objects:

Hangers, which we all use to hang up clothes in the closet, now exist in different materials, but once they were only found in wood and this is why they were created this way: the wood used was able to keep moths and small insects away.

All Lego characters have a small hole in their heads to protect their small owners. The hole lets air through, preventing choking if accidently swallowed.

The pin cushions for storing needles and pins are not made just to simply to keep them in order and limit any danger, but also because the internal material keeps the tips sharp.

Ketchup bottles of the well-known Heinz brand have a small number on the neck, where the container narrows. It is a 57 and it has been revealed that this was the lucky number for the producer. Also, by tapping on this exact spot, the sauce will come out faster.

The tabs on soda cans are used to insert and hold the straw in place, even if not everyone is aware of this and we tend to detach them and throw them away.

The small pocket that is sometimes found inside normal jeans pocket exists, historically, because a pocket watch was once kept in there. Today not all trousers have it and, sometimes, it is even a fake pocket. But they can easily be used to store coins, clothespegs and other small objects.

It is not something very obvious, but the windows of a plane have small holes at the bottom called "breathing holes" which allow the balancing of the air pressure in the panels to that of the cabin.

Probably most of us use bobby pins incorrectly. Their correct use is indicated by the way they are made which should ensure the correct fixing of the hair. The wavy part should be kept down, towards the skin, while the smooth part should face upward.

Padlocks generally have small holes at the base that are used to drain the water in case of rain, avoiding the danger of rust or freezing, or to insert lubricating liquids in case of problems with the lock.

The coins have ridges along their edges. This is still true today, but the reason has historical origins. Ancient coins, often made of precious metals, ran the risk of being forged. Through these streaks, fakes could be better controlled and avoided.

Did you already know about some of these incredible curiosities?