It's misleading to suppose there's any basic difference between education & entertainment. This distinction merely relieves people of the responsibility of looking into the matter.

(1957) from "Classroom Without Walls", Explorations Vol. 7, 1957; reprinted in Explorations in Communication ed. E. Carpenter & M. McLuhan, (Boston: Beacon, 1960); and again in McLuhan: Hot and Cool ed. G. E. Stearn (NY: Dial, 1967).