The word in any form, whether it be a part of speech or the image recorded on paper or other carrier, was and remains the main sign distinguishing the person from an animal.
What the point of speech activity consists in
The human speech as the communication medium is the leading form of interaction of individuals. It is safely possible to claim that only thanks to the articulate speech of people reached that perfect form in which stays now. Moreover, along with work which allowed to develop a set of useful skills for the long millennia of evolution, coherent intelligent speech gave to mankind an opportunity to realize such important function as communication with each other.
For the best understanding of a structural ratio of concepts the speech, language and speech activity it is necessary to differentiate these phenomena in a certain way.
The speech in the initial manifestation is not only a form of the address to people, but also means of the report of certain speech information from one individual to another.
Speech activity as communication form
Under speech activity it is the simplest to consider a public and communicative form of communication which assumes direct exchange of information. In the physical essence the air fluctuations modulated by organs of articulation of the person aim only to force to fluctuate as appropriate eardrums of the listener. At the same time, transferring the human speech, these physical fluctuations are filled with quite certain sense as transfer not easy separate words, and the thought concluded in them.
Point of speech activity
Thus, all point of speech activity just is in that by means of it to transfer the relevant information from the person to the person for the purpose of communication, training or distribution of some ideas among the considerable mass of people. That is speech activity, being acquired skill of mankind, became the defining factor for creation of an information field without which the human community is simply impossible.