41.   Success in modern life is next to impossible without the maneuvering room afforded by a bit of calculated vagueness here and a strategically bitten tongue there.

42.   The goal is planning for the future, which is clearly impossible without a good understanding of the present.

43.   The drug war has made substantial progress that would have been impossible without laws and public support.

44.   The president maintains that savings that large are impossible without destroying the programs.

45.   The work would be all but impossible without the hand of the NIH and other federal agencies like the CDC and the Defense Department.

46.   This would be impossible without resolving what to do with the tainted mud.

47.   This would make maneuverability difficult, close-up research impracticable, and landing almost impossible without a runway.

48.   Trying to estimate the potential damage of a dirty bomb, experts say, is impossible without considering many variables.

49.   While DNA tests would also be possible, she said any attempt to match the foot to Ms. Sylvia would be impossible without a comparison sample of her DNA.

50.   Yet the success of the two men would probably have been impossible without the artistic flair of a third.