There's a measure of prescriptivism and descriptivism in every dictionary. Prescriptivism believes that the language should mirror the best practices of English, and editors are prescriptivist in so far as they don't want to let things they consider to be inelegant or ungrammatical into print.

The history of English is full of that, lots of things done with good intentions that 200 years down the road have resulted in a giant mess, where someone's pet peeves - like John Dryden and his hatred of terminal prepositions - could become real standards.

I don't know that I would say words are more political now, particularly after Donald Trump has come into office. I will say that what I notice is that people pay more attention to the words that politicians use. They really want to understand the full nuance, the connotative meanings of those words.

With "marriage," the word gets applied to same-sex marriages by proponents and opponents alike. That means the word itself is changing, and we reflect this change. But because of the idea that the dictionary is the objective voice of authority over culture and knowledge, it reads like approval. It's not a helpful way of looking at lexicography.

Language is the primary way we communicate with each other, and we have really strong feelings about what words mean, and about good language and bad. Those things are really based on sort of an agglutination of half-remembered rules from high school or college, and our own personal views on language and the things we grew up saying, the things we grew up being told not to say.

Back in the 19th century, our marketing folks decided to play up the refined usage angle because prescriptivism was very popular: our dictionary is where you go to learn anything about anything. That really set the tone in North America for how people responded to dictionaries.

We're not saying that marriage, the thing, is now open to anyone of any gender. We are saying, when the word marriage is used in this particular context, this is what it means. And it was the same with "alternative facts." That was a big one. "Feminism" was a big one. And when people came to the "marriage" entry, because we live in the Internet age, they either immediately fire off an email to us saying they're horrified at how commie-pinko-liberal we are, or they fire off an e-mail saying thank you so much for speaking truth to power.