Originally an expression in horse-racing: different horses are suited to different race-courses. Now widely used in other contexts. 1891 Turf vii. A familiar phrase on the turf is ‘horses for courses’… The Brighton Course is very like Epsom, and horses that win at one meeting often win at the other. 1929 Daily Express 7 Nov.18 Followers of the ‘horses for courses’ theory will be interested in the acceptance of Saracen, Norwest and Sir Joshua. 1976 Governance of Britain ii. He must concentrate on the doctrine of horses for courses .. in using the specialist knowledge of individual ministers. 1985 ‘’ Pearlhanger xxiii. It seemed to me I'd need a massacre, and immediately thought of Big John Sheehan. Horses for courses. 1996 Washington Post 7 July D6 In thoroughbred racing, it's called ‘horses for courses.’ In Hollywood, it's known as smart casting. efficiency and inefficiency