21.   But there is considerable uncertainty among other economists about how low unemployment can go before the risks outweigh the benefits.

22.   But these benefits are outweighed by the political support companies lend to bad regimes.

23.   But when the costs to the female of male pushiness outweigh the benefits, then biologists call it sexual harassment.

24.   But whether those outweigh the benefits of trying to keep this league together has yet to be seen.

25.   City officials have said that the Astrodome could remain home to concerts, rodeos and other events if the need outweighs any benefits of demolishing it.

26.   David Prosperi, chief spokesman for the CBOT, said that both exchanges conducted a survey of members and found that costs outweigh benefits.

27.   Did the disruption outweigh the benefits?

28.   Eric M. Freedman, a law professor at Hofstra University, said the costs to society of the new investigative tools outweigh their benefits.

29.   Economic-development officials say the costs of the company relocating will outweigh any benefits gained by the move.

30.   He said the project ended when Air Force officials decided its risks outweighed its benefits.