51.   Some experts still doubt that the program will ever be completed, but for many the surprise is that it has gotten as far as it has.

52.   Some family experts doubted whether there would be a rush of men filing paternity claims.

53.   Still, most experts doubt that Dole will deliver a breakthrough performance.

54.   Statistics in the Green report predate this legislation, but health experts doubt that these provisions will reverse a quickly growing trend.

55.   Still, some experts doubt such switches will occur.

56.   Some weather experts still doubt that the current warming trend will result outright in an El Nino.

57.   Still, some experts doubt the switches will actually take place.

58.   The actual technology at the center of the debate is many years from being ready for market and some experts doubt that it could ever be.

59.   The central bank refused to lower interest rates last week, and experts doubt it will do so for at least another few months.

60.   The idea did not come out of the FAA, where some experts doubt it is achievable.