Lack of a Gender-Neutral Pronoun
“Tell him to enter his password” assumes the person is male. “Tell them to enter their password” means two or more people who share a password should enter it together. “Tell it to enter its password” implies the person is not a person at all. “Tell him/her to enter his/her password” is obscenely long to write and read. Why can’t we have a simple one-syllable gender-neutral pronoun?