41.   But an observant parent can often tell the difference between normal and drug-related behavior.

42.   But before we can discuss trance abuse and trance engineering, we need to be able to tell the difference between good trance and bad trance.

43.   But by Thursday you could tell the difference.

44.   But can we still tell the difference between their work and farrago?

45.   But Asians can tell the difference.

46.   But in taste and texture, it is hard to tell the difference.

47.   But telling the difference between somebody who is simply being bullish and someone who is manipulating subscribers for his own advantage can be difficult.

48.   But Ms. Gilligan was not able to say precisely how a passenger would tell the difference.

49.   Can Kaczynski tell the difference between right and wrong?

50.   Can the media tell the difference between the two?