Kwame Anthony Appiah: “Like all the words in our language, the identity labels we use are a common possession. Were everybody to follow Humpty Dumpty’s example [‘When I use a word, it means just what I choose it to mean’], we simply couldn’t understand one another. If Toni Morrison isn’t a black woman, the term isn’t doing any work. … ‘Lesbian’ isn’t much use if you’re looking for a partner on Bumble unless it signifies a woman who might be open to sex with another woman.”