It’s the oldest story in the book: boy meets girl. Boy and girl fall in love. Boy and girl live happily ever after.

The problem? The girl in this instance is a computer, and the boy is the lonely Theodore Twombley (Joaquin Phoenix). Theodore, who spends his days composing love letters for other people, is slogging through the aftermath of a failed marriage when he purchases an artificially intelligent operating system. His drab life, backlit by a vaguely