The “he or she” problem
I find educated speakers saying the following:
“Everyone must do their duty.” or “The next player must move their piece if the move is possible.”
This is caused because people do not think ahead when speaking. To avoid this, they could start with the plural, such as:
“All of us must do our duty.” or “Players must move their piece if the move is possible”.
What will future grammar books say about the time honored rule that pronouns must agree in gender, number, and case? They must agree in gender, number, and case with the exception that in order to avoid using “he or she” or “his or hers”, the plural may be used as an exception.