lINGUISTICS as a conversation

Good day! Hi there! i just would like to know if Lingustics can be used as a tool for everyday's conversations, public speaking and many more; how does it benefit us and what are its effects to us. Thankyou. I just would like to sahre something i've read about linguistics - its history and unique characteristics. Correct me if i'm wrong. The article goes like this:

WikipediaMain article: Arabic grammar

Due to the rapid expansion of Islam in the 8th century, many people learned Arabic as a lingua franca. For this reason, the earliest grammatical treatises on Arabic are often written by non-native speakers.

The earliest grammarian who is known to us is ?Abd Allah ibn Abi Is?aq al-?a?rami (d. 735-736 AD, 117 AH). The efforts of three generations of grammarians culminated in the book of the Persian linguist Sibawayhi (c. 760-793).

Sibawayh made a detailed and professional description of Arabic in 760 in his monumental work, Al-kitab fi al-nahw (?????? ?? ?????, The Book on Grammar), bringing many linguistic aspects of language to light. In his book he distinguished phonetics from phonology.

Traditionally, the Arabic grammatical sciences are divided into five branches:

• al-lugah (lexicon) concerned with collecting and explaining vocabulary
• at-ta?rif (morphology) determining the form of the individual words
• an-na?w (syntax) primarily concerned with inflection (irab) which had already been lost in dialects.
• al-ištiqaq (derivation) examining the origin of the words
• al-balagah (rhetoric) which elucidates construct quality

Thanks!
<EDITED by mod to credit your source, http://en.wikipedia.org/wiki/Arabic_grammar#History.>