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.

I think when dictionaries define words, there's a sort of hair-splitting that to most people doesn't make any sense, which is we're not describing what a thing is.

Words have always been political, and that means that, in many people's minds, dictionaries are political. Because that's what dictionaries do: they do 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.

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.

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.

The initial 18th-, 19th-century intention was to give the less-educated lower classes a way to move up into this new, rising middle class, to enable them to fit in. So our view of language as being class-based is an unintended consequence of the drive to help educate rising businessmen.