41.   But if the number of Americans untouched by recession is diminishing, optimism is not.

42.   But investor optimism is hard to kill.

43.   But is such optimism warranted?

44.   But her optimism might be misguided.

45.   But his optimism is far from universal.

46.   But now that optimism was gone.

47.   But optimism is in somewhat short supply in Hollywood.

48.   But others say such optimism is misplaced.

49.   But optimism is what spring training is all about, and the good news is that the players in camp are not all fat slobs.

50.   But psychologists identified with that movement say that positive psychology already makes clear that at times optimism is neither appropriate nor beneficial.