Why does grammar matter?
Writing exists to be read. So the reader must be considered when you construct sentences. You write differently for your friends, your parents and your teacher. The grammar you learn in school helps you meet the expectations of the reader. They also learned a similar grammar in school. …
As the social thinking about gender changed, people began to write “he or she” to be more inclusive. Now we can use “they,” which is all-encompassing.
That shift will continue to be debated, as will starting a sentence with a conjunction like “but” or “and,” which used to be discouraged. But I think I get why these changes are happening: They mimic speech.
By Laurie Ann Britt-Smith, College of the Holy Cross for The Conversation