21.  At a certain point, it loses a little impact.

22.  At a certain point, much depends on the boss.

23.  At a certain point, of course, bathing her in a rain of roses backfires.

24.  At a certain point, people start to ask, what makes you so interesting?"

25.  At a certain point, realities impose themselves, even on a superpower."

26.  At a certain point, the dreaminess gives way to tedium.

27.  At a certain point, they say, the damage to the brain becomes permanent.

28.  At a certain point, Trulock's frustrations became known to a number of Republican legislators.

29.  At a certain point, what people mean when they use a word becomes its meaning.

30.  At a certain point, you begin to suspect that eating well is not really the purpose of the exercise.