41.   But no one seems sure the new approach will work.

42.   But Professor John Pitney of Claremont-McKenna College in Claremont, Calif., said the approach might work.

43.   But scientists say this approach has never worked because fishing efforts are simply intensified in other seasons, and that the only solution is a drastic reduction in fleets.

44.   But many say that tough approach is not working.

45.   But such an approach does not work in American classrooms.

46.   But the cheap and cheerful approach will not work forever.

47.   But the approach did not work well in practice.

48.   But the head-banging approach worked.

49.   But that approach also works.

50.   But the show-and-tell approach did not work, either, proving there are few designs that can stop Hill and the Pistons.