This is not the first time I’ve noticed it. If you use they as your default 3rd person singular pronoun, you may end up using it even when you are trying to refer unambiguously to a person whose gender is known to you. Come on, people! 
This is not the first time I’ve noticed it. If you use they as your default 3rd person singular pronoun, you may end up using it even when you are trying to refer unambiguously to a person whose gender is known to you. Come on, people!