The album’s lyrics, written by Yorke, are more abstract compared to his personal, emotional lyrics for The Bends. Critic Alex Ross said the lyrics “seemed a mixture of overheard conversations, techno-speak, and fragments of a harsh diary” with “images of riot police at political rallies, anguished lives in tidy suburbs, yuppies freaking out, sympathetic aliens gliding overhead.” Recurring themes include transport, technology, insanity, death, modern British life, globalisation and anti-capitalism. Yorke said: “On this album, the outside world became all there was … I’m just taking Polaroids of things around me moving too fast.” He told Q: “It was like there’s a secret camera in a room and it’s watching the character who walks in—a different character for each song. The camera’s not quite me. It’s neutral, emotionless. But not emotionless at all. In fact, the very opposite.” Yorke also drew inspiration from books, including Noam Chomsky’s political writing, Eric Hobsbawm’s The Age of Extremes, Will Hutton’s The State We’re In, Jonathan Coe’s What a Carve Up! and Philip K. Dick’s VALIS.

https://en.wikipedia.org/wiki/OK_Computer#Music_and_lyrics