Desk Set (1957)

Katharine Hepburn runs a TV network's reference library, a team of women who can answer any question from memory and the shelves, and Spencer Tracy is the methods engineer installing a computer that might make them redundant. Decades later it plays as a sharp, funny argument for the human researcher, the one who knows where to look and what the question really means. The battles of wits between Hepburn and the machine are the highlight.