People are born approximately equal. They have two arms, two legs, the ability to think, to make conclusions, to do things. But sometimes there are people who are deprived of various communicative opportunities. They need help.
Imagine how in an instant, a world filled with sounds becomes completely silent. The birds singing, the sound of other people's footsteps, the noise of cars, even just music, disappears. In fact, the world has not "become silent", you just became deaf, that is, you have lost the ability to hear. Add to this the impossibility to express your thoughts, that is, dumbness and you will have to turn to the sign language interpreter if you do not know the sign language.
Sign language
It is believed that even before the appearance of verbal (voice) speech, our distant ancestors used gestures to communicate with each other. Get fruit, hunt saber-toothed mammoth together, make long transitions in search of a better territory. For all this, it was necessary to somehow explain to fellow tribesmen what to do.
However, with the advent of the opportunity to verbalize thoughts, sign language has not disappeared. There were always people who were deprived of the opportunity to hear, speak, or at the same time deaf and dumb. Sign languages improved and acquired their own formal completeness. So in the mid-eighteenth century, one French teacher, Laurent Clerk, also suffering from this ailment, created the first school for the deaf in the United States. As a result of this, the so-called "Amslen" - the American version of sign language was gradually formed. It is noteworthy, but it is more from French than American.
Sign language translation schools also opened in Russia, and the first event of this kind took place at the beginning of the nineteenth century. The same French technique was taken into service. And gradually it spread throughout the world.
Interestingly, in terms of composition and richness of features, sign languages are no less complex than ordinary ones. It has its own system, grammar, certain rules. Such languages are very specific, figurative, amorphous (when there is a concept, but there is no expression of form, number, case or gender), spatial, and so on.
