The pictograms are somehow a method of communication that goes back to time immemorial, which is based on the interpretation of signals representing certain situations or recommendations. They are often simple drawings, in basic colors. These signs can be found in many places that are usually frequented, such as public toilets, where you can see the poster of a lady and a gentleman, used to indicate the bathroom for women and for men.
Its oldest version is called cave painting, where everyday situations were represented, such as serving beer rations in old bars, hunting animals or raising them and humans adapting to nature. According to recent discoveries, the oldest human-made paintings date back about 39,900 years and are located in Indonesia, more specifically on the island of Sulawesi; the works portray prints of human hands, as well as a babirusa dating back 35,400 years.
This type of communication helped to develop writing, that is, the symbolism that we use to be able to exercise it. An example of this would be the symbology used by the ancient Egyptians, which they recorded in the temples and the tombs of the pharaohs and used as a means to tell a story; These were mostly drawings and signs, such as elements of the human body or civilization and lines arranged in all directions.
They maintain certain categories that organize them depending on their functions, thus they are arranged in historical, writing, counting system, as well as diagrams and graphs. Some of the best known signs are those of security or restrictions, which can be seen on the roads or places that are intended for entertainment.
