41.   But some cancer experts thought it was an infection.

42.   But some experts think the real number is lower.

43.   But some aviation experts think that the new system will not be reliable, and they want the government to maintain both systems.

44.   But the experts thought otherwise.

45.   Cancer experts had thought that smokers who began as children or teen-agers had higher rates simply because they had been smoking longer.

46.   Currency experts are already thinking about the next next-generation design, which Ferguson expects will be needed in seven to ten years.

47.   Even at that, Botha eventually made a mistake and paid dearly for it, a mistake Norris insists he can avoid regardless of what the experts think.

48.   Even so, most industry experts could think of no good reason why an encryption algorithm key would be intentionally shortened, other than to facilitate surveillance.

49.   Experts thought they had a pretty good idea of what caused deep earthquakes.

50.   Experts think it shows that very low levels of HIV can act like a vaccine that stimulates effective natural immunity, perhaps indefinitely.