Sign language is the language by signs that people use to communicate who have speech difficulties, hearing impairment and other associated disorders. Today many people learn this language despite not needing it as a usual form of communication. However, learning any way to communicate with others is a breakthrough. A unique way to interact with all kinds of people and as such, a huge door open to the rest of the world.
However, there is no universal sign language. In fact, more than 300 different sign languages are now known around the world. This is a grievance to people who can only communicate through signs, because if they need to communicate with people from other countries, they need to learn their rules, which is an added difficulty.
Why is there no universal sign language?
For experts, the answer to this question is simple, it is not possible that there is a single sign language because it has a lot to do with the culture of each community. With the way to express yourself in different places, not only in the world, but within the same country. For example, the LSE (Spanish Sign Language) and Catalan are recognized as the official language in Spain.
On the other hand, sign language is constantly evolving, through communication among people who use this method. Even, without the need for this evolution to occur at the same time as the spoken language. That is to say, establishing a single sign language would mean removing the specific characteristics of the language of each zone. For example, in Western countries cutlery is used for eating, but the same does not happen in Asian countries where it is eaten with chopsticks. Therefore, it is difficult to create a sign that determines the action of eating universally, when it is not eaten equally in all places of the world.
In short, language and communication have a lot of social, the way people relate on a daily basis. Creating a single universal sign language would mean removing those special features from each place. Although in some situations it might be something beneficial and a simpler way of communicating, those everyday ways that are learned and transferred on a daily basis would inevitably be lost.